Three days is not a long time, but it is not a short time.

In order to be able to thoroughly master the ability to summon and control the elements within the specified time, Zhang Cheng once again entered an unprecedented state of concentration.

Don't eat, don't drink, don't sleep......

Even going to the toilet and cleaning up personal hygiene are all squeezed out, and they spend all day soaking in the solid basement of the basement of the house to conduct theoretical research and practice.

He was like a hungry sponge, frantically absorbing all kinds of knowledge in his notes, even if he almost broke his arm by the irascible earth elemental several times, he did not retreat at all, but learned a lot of experience from it, and each time he was summoned, he made a significant improvement compared to the last time.

In just two days, he had been able to control the summoned elements for more than a minute.

The only problem is that as the control time is extended, the elemental's revolt will increase exponentially with each command, and the stronger the itself, the faster it will break free.

According to the notes, the best solution is to forcibly pull an element out of the world it is in through temptation and imprison it in a soul diamond.

In this way, if the mage summons again, it will be the same element.

And because of the severance of the connection with the elemental world, the elements can no longer draw power from it, and it is naturally impossible to break free from control, but the disadvantage is that the mage, who is a summoner, must use his own magic to provide energy to the elements.

After considering the pros and cons, Zhang Cheng decisively chose to accept the advice given in the note, and prepared to capture one of the four elements of fire, water, earth, and wind.

After all, he will leave this world sooner or later, and after he returns, the ghost knows if there is any elemental life, so it is better to take insurance in advance.

Just do it!

Seducing the element is not an easy thing to do.

First, they had to get something they couldn't refuse, such as the essence of water, the essence of air, the essence of earth, and the essence of fire, which would increase the element's own strength.

Second, in order to prevent the elements from escaping, the imprisoning circle is also essential.

Thirdly, and most importantly, the mage must know the name of the summoned element, otherwise he cannot complete the captivity ritual.

Because there were too many things needed, Zhang Cheng directly purchased a full set of materials from the material administrator of the Kenrito Council at a high price, spent a full fifty gold coins, and then hired three more senior apprentices to help him complete the confinement circle in the basement, and finally copied the names of four elements equivalent to his own strength by flipping through the ancient classics in the library.

By the time all the preparations were done, it was already a week later.

During this time, he also smoked air conditioning to make a large number of primary healing potions, at least a thousand bottles.

As one of the most basic magic potions in alchemy, in fact, the ingredients of the primary healing potion are very small, only silver leaf grass and tranquility flower are needed, the process is even simpler, maintain the temperature of the solution, slowly add the chopped herbs to it, and after the color of the potion turns red, cast a spell to activate it.

Perhaps in the game, no matter what the potion is, it has to be slowly mixed bottle by bottle, but in reality, it is completely possible to scale up the container and the amount of herbs according to the proportion, make a large pot full at once, and finally put it into the bottle.

Of course, this method is not suitable for everyone, especially when it comes to controlling the concentration of herbs and the temperature of the solution, and the slightest mistake can lead to disastrous consequences.

The reason why Zhang Cheng dared to do this was thanks to the knowledge and experience instilled in his head.

He didn't even need to think or calculate, he could judge the temperature of the solution just by the naked eye, whether it was more silver leaf grass or more tranquility flowers.

The merchant, who had just returned to Dalaran from outside, happened to see the mountain of potion bottles in the house, and his whole body fell into ecstasy, and exclaimed excitedly: "O Holy Light, my Holy Light! It is unbelievable! I have only been away for a week, you ...... You've made so many healing potions?"

"Don't get excited, dear old George, they are just the most basic healing potions, and they can't heal wounds in just a few seconds like high-level healing potions, and at most pull the seriously injured back from the brink of death. Zhang Cheng rubbed his dry eyes, and a tired expression appeared on his face.

As early as after the first bottle of primary healing potion was made, he couldn't wait to buy a few rabbits to test the effect, and found that the biggest use of this thing was actually to stop bleeding.

No matter how serious the internal and external injuries are, as long as a bottle goes down, the blood will stop immediately, and as for when it can heal and recover, it depends on the physique of the injured person.

"No, no, you don't understand, the army wants this cheap primary healing potion that can save your life at a critical moment. Generally speaking, every formed army usually has a priest or physician who is responsible for treating the wounded, and the soldiers can be healed quickly as long as they are alive after the battle. ”

As he explained, Old George took out the dagger he had laced with him and made a slight slash on his wrist, and scarlet blood instantly emerged from the split skin and dripped to the ground along his fingers.

Without hesitation, he quickly uncorked and poured one of the potions on his head.

In less than three to five seconds, the wound immediately stopped bleeding and slowly healed at a speed visible to the naked eye, and finally only a shallow scar remained.

"Great! There is no problem with the potion at all! I can venture to ask, how exactly did you do it? As far as I know, most alchemists can mix fifty potions a day, which is quite a remarkable achievement. But compared to you, they are like crawling snails. Old George said cautiously with a greedy look in his eyes.

As a profit-seeking businessman, he now looks at Zhang Cheng as if he is looking at an inexhaustible gold mine.

"Hehe, I'm sorry, it's my little secret. Also, I want you to keep it a secret, okay?" Zhang Cheng asked with a smirk.

"Yes, I swear I'll keep this secret for you. Old George nodded vigorously without thinking, and at the same time said in a not very embarrassed tone: "In addition, I have a small request, since you have prepared so many primary healing potions at one time, I don't have enough cash in my hand for the time being, I don't know if I can pay on credit first, or use other goods to offset the payment?"

"Tell me, how much credit do you plan to take, and what do you plan to use to settle the account?" Zhang Cheng casually found a chair and sat down, opening the package he had just gotten in his hand.

In addition to a large number of herb seeds and a book called "A Guide to Herb Cultivation - Written by the Council of Cenarion", there is also a cloth bag covered in moss, and nearly ten kilograms of black soil......