Sean shook his head again and again, "No, I can't let you leave this planet." ”

For Sean, the Black Dragon King is actually a hidden trump card, and he certainly doesn't want this trump card to disappear.

The Black Dragon King laughed and said, "Have you forgotten that there is a soul connection between us." As long as you leave the Isle of the Dead and summon me in a secluded place, then I can easily return to this planet. ”

Sean's face changed slightly, and he asked in surprise, "Lord Dragon King, isn't the ablation technique useless?"

The Black Dragon King laughed loudly and said, "Sean, there is no magic in this world that is absolutely invincible, any magic has its way to crack it, even the forbidden spell can be stopped by the gods, let alone a mere ablation technique." ”

Sean smiled awkwardly, but the Black Dragon King's words made him feel a lot.

The Black Dragon King shook his head slightly, his heart was also full of emotion, when he was young, he also thought that some magic was invincible in the world. But in the worst battle of the past, when all the magic he mastered had lost its effect, and when his powerful body could not harm the other party, he realized that there was nothing invincible in the world.

"Okay, I'll teach you the defense system here, you think about it, how to fix it. The Black Dragon King said, tapping his hand on Sean's forehead.

A strange and seemingly extremely familiar memory suddenly appeared in Sean's mind, after having these memories, Sean seems to have a deep understanding of all the defense systems of the island of the dead, in his eyes, the original tight defense force has become dilapidated, everything is messed up, if this continues, the entire island of the dead will definitely become completely undefended one day.

Of course, in terms of the true strength of the island, even if it is completely defenseless, it still has an incomparably strong strength.

However, the enemies faced by the twelve undead kings on the island were mages on the entire continent, and if they really gave it a go, the island of the undead would definitely not take too much advantage.

Sean closed his eyes and silently digested the memories given by the Black Dragon King.

This kind of means of memory inheritance is indeed wonderful, it can allow a person to master a large amount of knowledge in a very short time, and it is also a good way to quickly improve strength.

However, there is no such thing as perfection in the world, and the knowledge imparted by this method is equivalent to cramming rote education, but it does not allow the person to be taught to gain the experience of flexible use.

If you want to digest this knowledge thoroughly and turn it into your own, then you need to put in 10% of your efforts to do it.

It's just that when Sean and One merge, he becomes a combination of computer power and human flexible thinking.

In this case, the time to truly digest this memory would be extremely short, and he might not be able to really integrate it, but in the face of the powerful computing power of One, Sean was able to use these things.

I don't know how long it took, but Sean finally let out a long breath and opened his eyes.

"Lord Dragon, thank you for your advice. Sean said sincerely.

There are so many things in these memories that make Sean feel amazed. Being able to get this memory inheritance was far more helpful to him than the Black Dragon King could imagine. At least in terms of understanding the magic method, Sean's cognition has changed drastically.

Not only for the teleportation array, but also for the protection formation, the attack formation, and even the experience inheritance formation of the elf clan, I have a certain new understanding and understanding.

The Black Dragon King glanced at Sean in surprise and said, "You have already comprehended these contents?"

"Yes. Sean said very cheerfully.

"Do you really understand?" the Black Dragon King's eyes became more and more surprised.

Others don't know, but he knows very well how relevant and huge these contents are, and it took him nearly 100,000 years to study them to the current point.

In his vision, although Sean has been promoted to a magician, and his spiritual power is strong enough to withstand this part of the memory inheritance, if he really wants to achieve something, it is unlikely that he will succeed without decades of study.

Of course, in these legacies, he also focused on some ways to solve the defense system on the island of the dead, as long as Sean fully follows these steps, he should be able to restore the defense system of the whole island to normal.

However, the moment Sean opened his eyes and got up, the Black Dragon King suddenly had such a strange feeling.

Sean doesn't seem to have memorized those fixed solutions to the problem, but has a certain, or rather a deep understanding, of the entire formation system.

After thinking about it for a moment, the Black Dragon King asked Sean a question.

This question is not complicated, in fact, it is also a step in how to restore the defense of the whole island, and Sean did not hesitate to answer the correct answer.

The Black Dragon King nodded with satisfaction, and said one question after another like pouring beans.

Sean also did not hesitate to give the correct answers to all the questions.

Of course, the content of these questions does not go beyond the answer of how to solve the island-wide defense system, and being able to answer these questions is a little difficult, but it is within the acceptable range of the Black Dragon King.

After hesitating for a moment, the Black Dragon King asked a new question, and when this question was raised, even the Black Dragon King himself didn't think Sean could answer it.

Because there is no accurate answer to this question in the memory inheritance he gave, if you want to answer it, then you must really have a certain understanding of these memory inheritances.

Sure enough, Sean didn't answer immediately this time, he tilted his head slightly, as if he was thinking and calculating something.

The Black Dragon King finally breathed a sigh of relief, it seems that although Sean's comprehension ability is far above that of ordinary people, he is not the kind of pervert similar to a god.

However, just as a smile appeared on his face, he heard Sean say an answer in a slow, yet convinced voice.

The Black Dragon King's gaze suddenly became a little dull, and his heart was full of horror, could it be that Sean really mastered the memory he had just inherited? And it was that kind of deep mastery, which could be completely turned into his own use.

The smile on his face suddenly became a little bitter, his eyes turned around Sean's body a few times, and he asked a few more key surname questions.

However, although Sean was a little hesitant, although it took a few minutes of thinking before answering each question, once the answer came out of his mouth, it was definitely the most correct.

After several times, the Black Dragon King finally believed that although Sean was not yet able to skillfully use the knowledge system he had inherited. But in this short period of time, Sean has eaten these things to a certain extent, he has comprehended the essence of this knowledge, and gradually integrated it into his own knowledge system.

The Black Dragon King raised his head and sighed, in this backward and barren planet, there was still such an outstanding genius, even if he was the smartest self in the dragon clan, in front of him, it seemed that he was a little ashamed of himself.

Sean didn't know how much impact his performance had on the other party, in fact, these memories were summarized and sorted out by the No. 1 analysis after entering Sean's mind.

It was precisely because of the powerful storage and computing power of the No. 1, as well as the gradually improving magic database established in advance, that Sean was able to answer the questions raised by the Black Dragon King.

Of course, as the difficulty of the problem deepened, No. 1 also spent a certain amount of time searching, analyzing, and calculating. In fact, in Sean's heart, he also has great admiration for the Black Dragon King, after all, the questions he raised, even No. 1 took so much time to answer, this is the first time he has encountered a situation.

Just when both sides were thinking about each other, Sean's face moved slightly, and he took out a space ornament, which was not an ordinary space ornament, but a hibernation space that had been transformed by a shaman.

Sean's mind swept over it, and an extra golden sandworm egg suddenly appeared in his hand.

Looking at this sandworm egg, Sean's face was quite strange.

In the past few years that this sandworm egg has followed him, it should have hatched a long time ago, but in the past, when making the first golden enchantment, Sean had extracted too much gold energy from its body, which caused the vitality of this sand worm egg to be greatly damaged, although Sean later let it ingest the same type of energy in the golden enchantment many times to replenish consumption, but it never showed signs of hatching.

But at this moment, it gave Sean a strange feeling that it was about to hatch.

What a rare opportunity to hatch a gold-type pet on the Isle of the Dead.

The Black Dragon King's eyes also showed a hint of amusement, and he smiled: "What a golden messenger's egg, I didn't expect you to have such a thing in your hand." After looking carefully, the Black Dragon King's eyes suddenly became weird, and he smiled and said, "Sean, this golden-veined creature seems to have some congenital deficiencies." ”

Sean's face was slightly red, of course he knew why the golden sandworm eggs were congenitally insufficient.

"Lord Dragonlord, is there anything you can do to help it?" asked Sean expectantly.

"Of course, I'll leave this little thing to me. The old dragon king's eyes lit up, and his face was confident.

Inexplicably, Sean suddenly felt a chill, and suddenly had goosebumps on his body, he always felt that the old dragon king's smile was a little weird, as if he was playing some prank.

But thinking about the relationship between them, that soul exchange contract, Sean believes that this old dragon will definitely not frame him.

Sean humbly asked, "Lord Dragon, how are you going to help it?"

"It's very simple, first you sign a blood pick with it, and then I will collect some energy to make it strong quickly. Seeing the worried look on Sean's face, the old dragon king hurriedly said: "Don't worry, I swear by the honor of the dragon clan, and after a few days, I will definitely give you a healthy baby." ”

Although he didn't know why the old dragon king was so enthusiastic about this, and even swore by the honor of the dragon clan, Sean was completely relieved. If even the oath of the dragon clan is to be doubted, then there really isn't much to be trusted in this world.

Seeing Sean nodding, the old dragon king was obviously overjoyed, and he said, "I'll arrange a magic array and let you sign a blood sign with it." ”

He stretched out his hand and swiped on the ground, and a large piece of dirt suddenly turned up, but under his control, these dirt debris and other things were not churning around, but flying in an orderly manner, and slowly moving in one direction, and finally pushed high.

Sean only looked at it for a moment and knew that he was depicting a magic array.

This is still because Sean accepted the memory inheritance of the old dragon king and had a deep understanding of the magic array, so he could see a little clue. However, the magic array depicted by the old dragon king at this moment is very mysterious, and it is obviously incompatible with the previous memory inheritance, and it is clearly two different genre magic arrays, so even if it is the number one, it can't see why.

In my heart, I really admire the old dragon king, and I don't know how much ink is in the chest of this old guy who has lived for many years.

Sean secretly swears that one day, he will learn everything little by little.

It's just that, looking at this magic array, Sean's heart is faintly cold, I really don't know what the old dragon king is doing.

It's actually very simple to sign a blood sign with a Warcraft, as long as you leave a sign of response on the forehead of the Warcraft that is happy with your own blood.

Of course, although this blood swab is simple, the effect is not very powerful.

When the strength of the Warcraft was inferior to that of the master, there was naturally no problem. However, once the strength of the demonic beast is higher than that of the master, then the vast majority of the demonic beasts will choose to betray and flee, and some particularly fierce demonic beasts will even backfire on their masters, killing and devouring the magician.

However, there are some exceptions, such as Black Whirlwind, who is already intimate with Sean, Kim and others. In this case, the so-called blood swab is just a way to connect with each other, and they will definitely not hurt each other.

It's just that, looking at the hard-working Black Dragon King, Sean was always a little apprehensive in his heart, what kind of blood signing ceremony is this, and he needs such a powerful magic array.

You must know that the strength of the Black Dragon King is extremely strong, in the past, in the Paradise of God, when he signed a soul exchange contract with Sean, it was just a finger, and a magical signing circle appeared.

And at this moment, he has to do it himself, looking at his cautious appearance, it seems that he is particularly interested in this magic array. It can be seen that this magic circle is really a great mysterious magic circle.

After a long time, the Black Dragon King finally ended his struggle and completely outlined the entire magic array.

Sean walked into the magic array at the signal of the old dragon king, even if he only used his spiritual consciousness to sense, he could also find the powerful power contained in this magic array.

Of course, this kind of power can't make Sean frightened, but he is more and more surprised in his heart, the Black Dragon King has spent so much effort, but he has made this magic array, what does he want to do?

"Lord Dragon King, what's the use of this magic array. Sean still asked with an open face.

"It's a signing circle, and its greatest role is to let you share life and magic with the creatures of the blood lot. The Black Dragon King explained with a grin.

Sean's heart suddenly shook, and a hint of surprise suddenly appeared in his eyes.

If the magic circle really has such a miraculous effect, then it will be a great help for Sean. It's just that he suddenly remembered something, his face changed slightly, and he asked, "Lord Dragon King, if one of the parties who signed the contract dies, what will be the result?"

"Quite simply, if one of them dies, the power he leaves behind will be inherited by the other. The Black Dragon King laughed and said, "Don't worry, this is not a symbiotic fusion array, and it won't cause any harm to your life." ”

Sean breathed a sigh of relief, although he was not the kind of guy who would easily trust others, but he had no doubts about the words of the Black Dragon King.

After all, the two of them have a soul exchange relationship, if they are malicious in their hearts and want to deceive each other, then they will have a strong sense from the soul.

For example, he and the Black Whirlwind also have a similar relationship, so when Sean treats the Black Whirlwind sincerely, this big guy will sense Sean's sincerity, and it is precisely because of this that Sean can finally obtain the heart of the Black Whirlwind and become a rare friend and family.

According to the Black Dragon King's orders, Sean sat down in the center of the formation, and the golden sandworm egg that seemed to hatch at any time was placed in front of Sean.

On the periphery of the formation, a playful smile suddenly appeared on the Black Dragon King's face, and he said, "Sean, I remember that you should have some purple gold crystals and magic cores on you that can restore your magic power." ”

"Yes. Sean said loudly.

The Black Dragon King and he had experienced the battle of God's Paradise together before coming out, although it was hidden in the White Bone Ring, but with his strength, as long as he was willing, everything in the outside world would definitely not be able to hide his induction, so it was not surprising to know about the Purple Gold Crystal.

The Black Dragon King smiled, and suddenly threw over dozens of demon cores, which fell next to the golden sandworm eggs as if they had eyes, just forming a circle to surround the sandworm eggs.

Sean glanced at it, and his face couldn't help but change slightly. These demon cores turned out to be the demon cores of the undead system, and looking at the energy contained in them, they must all be above level five. After taking a closer look, Sean even found a few seventh-level undead demon cores.

His heart suddenly beat violently, these demon cores were naturally the trophies obtained by the Black Dragon King from hunting undead creatures, but he took them out so generously, I really don't know what he was thinking.

"Sean, take out all the things you have that can replenish your mana, if you don't have enough of them, you may be killing this pet of yours. The Black Dragon King seemed to be kindly reminded.

Sean was apprehensive and vaguely uneasy, but after hesitating, he still took out all the purple gold crystals and part of the demon core and put them in front of him, which is called being prepared and safe. However, what Sean was holding in his hands was not the precious purple gold crystal, but two third-level demon cores.

Although the energy in this is far from being comparable to the purple gold crystal, but in the same way, its value is low, even if it is all consumed, Sean will not feel heartache.

"Be careful. ”

As soon as the Black Dragon King's words fell, a violent energy fluctuation suddenly appeared on the magic array.

However, what was surprising was that these energy fluctuations did not spread outward, and on the periphery of this formation, there seemed to be an even more powerful force that forced these energy fluctuations back to the center of the formation.

When these energies continued to enter the golden sandworm eggs, the Black Dragon King roared, "Sean, order the blood slot. ”

Sean was already engrossed, and without saying a word, he stretched out his finger, and there was a drop of bright red blood on his finger, dripping on the golden sandworm egg.

Under the effect of the magic array, the blood automatically formed a strange pattern as if it had life, and when this pattern spread all over the golden sandworm eggs, the eggs finally broke.

A small, only a dozen inches long golden sandworm crawled out of the egg, it was somewhat similar to the golden sandworm that Sean had seen before, but there were only four pairs of small feet under the abdomen.

The sandworm stared around with large, curious eyes, and it first noticed Sean, who had a clear look in his newborn eyes.

It opened its mouth and snorted softly, as if calling for something.

Inexplicably, Sean actually had a feeling of licking calves in his heart, as if he was really related to this little sandworm.

Of course, this is just a feeling, it is a special ability under the action of the magic array.

Sean smiled bitterly in his heart, this little sandworm may have taken the creature it first saw as its parents.

He stretched out his finger and put it in front of the little sandworm, which squirmed its tiny body and crawled on top of Sean's fingers. Suddenly, the little sandworm turned its head, stared at the undead demon cores that were not too far away from it, and screamed excitedly.

Listening to its call, Sean inexplicably felt a feeling of hunger, and he knew that this feeling was actually coming from a small sandworm. However, being able to be clearly reacted by the magic array is also a magical thing.

It was only a slight hesitation, and Sean had already placed the little sandworm on top of a fifth-level undead demon core.

After all, the little sandworm has just been born, and even if it has the ability to devour demon cores, it is impossible to devour too many at once.

However, to Sean's surprise, the little sandworm was not devouring the main body of the demon core, but sucking the undead energy in the demon core.

When this energy poured into its body, the body of the little sandworm swelled at a speed visible to the naked eye.

The voice of the Black Dragon King also came to his ears at this moment: "Sean, send your magic power into the pet's body, and keep it equal to the energy it absorbs, otherwise this pet will be petrified because of too much undead energy." ”

Sean's face changed slightly, he cursed in a low voice, and without thinking, he mobilized his spiritual power and poured into the little sandworm's body.

Since Sean and the little sandworm have established a mysterious connection through blood sticks, psychic power can enter its body without hindrance.

As soon as Sean's spiritual power entered its body, Sean immediately understood that the Black Dragon King's words were not wrong.

As the undead energy swarmed in, the body of the little sandworm seemed to be in the process of petrification. But for some reason, this little sandworm is still desperately absorbing the undead energy in the demon core, and it seems to have a posture of preferring death to rest.

Sean had no choice but to pour spiritual power into it, and once his spiritual power entered the body of the sandworm, it immediately merged with the energy of the undead system, which was greatly unexpected by Sean, he never thought that his energy could be integrated with the energy of the undead system.

However, this result is not bad, because when the two energies fused, there was a magical change, emitting a strong golden light.

Once these golden lights appeared, they were immediately swallowed by the little sandworm calmly, and its body was like a bottomless pit, no matter how much gold energy there was, it could accept it all.

At this moment, Sean already somewhat understood the old dragon king's intentions, and it seemed that he wanted to make up for the innate shortcomings of the little sandworm through this method.

However, the speed at which the little sandworm absorbed the energy of the undead demon core was far beyond Sean's expectations, and with the increase of gold energy in his body, the speed of the little sandworm's absorption was greatly accelerated, and the speed at which Sean was forced to input spiritual power was also constantly improving.

It was only a quarter of an hour later that Sean understood why the Black Dragon King kindly reminded him to prepare more hedron and magic cores to replenish his magic power.

Because of this consumption rate, no one can afford it.

It's just that this little sandworm, how can its young body receive such a huge amount of energy?

He opened his closed eyes, his body trembled, and in front of him, the little sandworm was already much larger than just now, almost twice as big.

While devouring the energy of the undead and absorbing the energy of gold, the little sandworm is growing up at the same time, and the whereabouts of those energies are also understood.

Every inch of the little sandworm contains a lot of energy, and it is precisely because of this powerful energy that the sandworm can grow almost every second in a way that violates biology.

Sean was a little hesitant in his heart, he wanted to make the little sandworm stop absorbing the undead energy through the blood swab several times, but he clearly sensed the little sandworm's cheerful mood at the moment.

After having the experience of getting along with the black whirlwind, Sean knew that if he interrupted its eating ** at this moment, then there would be an additional crack in the relationship he had just established with the little sandworm, and he really didn't know how much time it would take to make up for this crack in the future.

Moreover, as more and more of his spiritual power poured into the little sandworm's body, Sean felt more and more that the little sandworm's dependence on him was gradually increasing.

This feeling is extremely strange, as if he is using his spiritual power to cultivate the relationship with the little sandworm, and every time he gives more spiritual power, the relationship between them becomes deeper and deeper.

While no one can explain why he feels this way, Sean believes he can't be mistaken.

It took Sean nearly ten years to cultivate a relationship with the black whirlwind, but the relationship with the golden sandworm eggs was significantly shortened.

So Sean pressed his surname and quietly let the little sandworm enjoy it to the fullest.

It's just that in his heart, he is secretly scolding, the speed of spiritual power has reached an incredible level, even if he is a magician, but if it is not supplemented by the demon core, I am afraid that it will not be able to bear it.

The little sandworm did not notice Sean's predicament, it had just been born from an egg, it did not understand the dangers of the outside world, and for it, everything at present was acting according to instinctive desires.

Those undead cores were like sweet mother's milk, and he couldn't wait to suck them into his belly. As for the consequences of absorbing too much milk, it is not something that the little one can understand.

With Sean's continuous spiritual energy supplement, the little guy let go of his belly and vowed not to give up until he ate everything.

As the energy devoured gradually increased, the size of the little one slowly increased.

However, unlike its mother, the little one did not grow to the point of hundreds of meters, its body size grew to about one meter and then fixed, and gradually grew two pairs of wings with about one meter stretched out on its body.

However, as the energy devoured, the golden light on its body became thicker and thicker, and people who were almost shaking couldn't open their eyes.

At the same time, the aura that permeated from its body became more and more powerful, and it had reached a level that was not inferior to that of the Black Whirlwind.

After a long time, the small sandworm's absorption rate finally slowed down, and it seemed that even it was about to reach its limit.

Sean's face was faintly pale, and he no longer knew how much energy in the demon core he had absorbed.

Fortunately, his reserves are extremely abundant, and he himself only acts as a transit station, supplying the energy from the demon core to the body of the little sandworm. Otherwise, he, the magician, would have been sucked into a corpse by the little sandworm in one fell swoop.

It's just that Sean roughly estimated that the amount of energy absorbed by this guy at the moment has almost exceeded three times that of Sean. If you add the energy in those undead demon cores, then the little sandworm has already absorbed the entire magic power equivalent to six magicians.

Of course, it is precisely because of such a huge amount of magic that the little sandworm can grow to this extent in just a few hours.

Even if you don't need to be particularly sensitive, Sean also knows that its energy strength has surpassed that of the Black Whirlwind and the Tongling Demon Tiger, even if it does not reach the level of the eighth-level demonic beast, but among the seventh-level demonic beasts, it must also be the top.

Finally, the little sandworm stopped absorbing the energy of the demon core, it turned around, and its one-meter-long body flew to Sean's feet, leaned its body on Sean's legs, and then closed its eyes and fell asleep.

Sean let out a long sigh of relief, looking at the low-level demon cores that had been scrapped everywhere, and he really couldn't cry or laugh in his heart.

The spiritual power was released and sensed in the outside world, and Sean was immediately relieved.

The magic array arranged by the Black Dragon King was indeed exquisite and abnormal, although the total amount of energy fluctuations in the array had reached the point of the sum of several magicians, but it still did not leak a single bit.

Such a magical circle is incredible.

Suddenly, the Black Dragon King began to clear the magic array, and under his cleanup, this magic array soon became unrecognizable, and he could no longer see any mysteries.

Sean looked at the Black Dragon King, only to see that his face also showed a look of exhaustion, and his heart moved slightly, and he already understood that their energy fluctuations had not leaked, and it was also because the Black Dragon King had a strong relationship in secret.

The two sides glanced at each other, and Sean smiled bitterly: "Lord Dragon King, your blood signature ceremony is really too powerful. He pointed to the meter-long golden sandworm under his feet and said, "It has just been born with the foundation of a seventh-level demonic beast, how far can it grow in the future?"

The Black Dragon King smiled slightly, and walked towards the few demon cores that had been sucked out of energy by the sandworms, he picked up these demon cores one by one, and carefully observed. After a few moments, he finally smiled with satisfaction.

Throwing two pieces to Sean, the Black Dragon King put away these magic cores.

Sean looked at him in surprise, a little clear in his heart.

As the saying goes, no profit can not be early, and the Black Dragon King put out this magical magic array, of course, not only to give the golden sandworm eggs a chance to grow. It seems that these demon cores that have been drained of energy seem to be the result he really wants.

Carefully looked at the two magic cores in his hand, one was a sixth-level one, and the other was a seventh-level one.

The spiritual consciousness turned around on the demon core, and Sean's face suddenly showed a look of surprise and inexplicability.

These two demon cores were originally the magic cores of the undead system, and it stands to reason that although the energy in them is exhausted, because they are demon cores above level five, they have the special surname of automatically absorbing space energy and replenishing them, so they will be able to automatically recover their energy after a period of time.

However, the two magic cores that are now in Sean's hands are no longer the magic cores of the undead system, but the kind of unsurnamed magic cores that are the rarest on any planet.

The Unnamed Cores are the most valuable of all the Cores, not only because of the extremely small number of such Cores, but also because the Unnamed Coles are applicable to all mages.

Even undead and spatial magicians can also use casteless cores as wand materials.

Of course, when it comes to unleashing special magic, it's a little less powerful than the exclusive core, but the ability to amplify all castes is enough for anyone to accept.

In this world, there is no magic core that belongs to all surnames, if there is really a magic beast with all surnames, then it means that this guy's strength has reached, and even surpassed the thousand-year legend, so he can obtain mutations and have the magic talent of all surnames.

However, can a magical beast with this kind of power still be called a magical beast? Those who want to hit this kind of guy are either idiots or gods.

Therefore, the casteless magic core is already the top treasure popular in the world.

Sean's heart was full of excitement, and he looked up at the Black Dragon King.

As if to see through his thoughts, the Black Dragon King shook his head slightly and said, "This method has great restrictions, and it can only be used when the Golden Family has just been born and the blood sign has been signed. A creature of the golden family only has such a chance once in a lifetime. Your Demon Pet can absorb more than 20 Demon Cores, which is already a remarkable achievement. ”

Sean sighed secretly, it seemed that this method of making a casteless demon core could no longer be used.

(To be continued)