After that, Han Chen and the others retreated from the study, and after sending Han Ling'er back to the room, Han Chen slowly walked to his room.

In the silent corridor, only Han Chen was walking slowly.

At this time, Han Chen's brows were deeply locked, and he thought as he walked, and it was not until he returned to the room that Han Chen came back to his senses.

Sit down at the table, pinch a piece of delicate pastry and chew it slowly in your mouth, but the usually delicious pastry is like chewing wax in your mouth at this time, and the food is tasteless.

"Is it really that simple?" Putting down the pastry in his hand, Han Chen sighed softly, raised his head, looked at the crescent moon hanging high in the sky outside the window, his eyes were slightly distracted, and he muttered.

"There is no eternal friendship in the world, although the ancestor of the Han family saved the son of the head of the Dugu family more than a hundred years ago, but anyway, it was a hundred years ago. In the past hundred years, the head of the Dugu family has changed several times. What's more, at that time, the Dugu family also ensured that your Han family left the imperial capital safely and avoided the difficulty of extermination. Theoretically, the Dugu family owes the Han family a favor that has been repaid. ”

"A strong friendship is usually based on the premise that the two sides stand at the same height, and with the difference in status and strength between the Han family and the Dugu family today, it can be said that it is a firefly and Haoyue, which is not worth mentioning at all. This lonely and undefeated invitation is not easy!"

Guiguzi appeared in the room like a ghost, and said softly.

"There is no eternal friendship, only eternal interests?" Han Chen had long been accustomed to Guiguzi's elusiveness, but when he heard Guiguzi say this, Han Chen still smiled bitterly.

With the current situation of the Han family, Dugu is undefeated and has to send an invitation post to invite, even if it is a fool, it is not simple.

When he was in the study before, Han Chen had already asked Han Tian, but Han Tian just shook his head and didn't answer, and Han Chen had to give up.

"No matter what, improving the strength is the right way. Only when you are strong can you protect your father and even your family!!" Han Chen's distracted eyes cleared, and his eyes were extremely firm.

Although I don't know what the intention of Lu Dao Dugu Undefeated to invite the Han family is, this does not prevent Han Chen from making a decision.

It's useless to think about it, even if you know what Dugu's undefeated intentions have for the Han family now, so what?

Without a strong strength to resist, it can still only become fish and meat under the knife of others, and be slaughtered by others.

Thinking of this, Han Chen stopped thinking nonsense, grabbed a few pieces of pastry casually, stuffed them into his mouth, and swallowed them, even if he filled his stomach.

Then he took out the tub and filled it with clean water. Seeing Han Chen busy working there, Guiguzi next to him nodded with a smile, and then seemed to say softly.

"By the way, since you have reached the fourth layer, then start practicing the Qimen Dunjia technique today!"

Han Chen, who was pouring water into the bathtub, slammed his body, immediately stopped what he was doing, turned around, and looked at Guiguzi eagerly with his eyes.

"But teacher, at night, you have to soak in the 'Yuan Spirit Liquid' to temper your body, and during the day, you have to boil your body in the 'Thousand Heavy Array'. Moreover, now that the 'Naling Nine Styles' have reached the fourth layer, the physical strength is enough to compete with the Seven Star Sword Servants, and the two volumes of Xuan-level combat skills in his hands also have to be arranged for time and start cultivating, in this way, will there not be enough time to practice the Qimen Dunjia Technique!" But then Han Chen frowned and said.

Not to mention that he didn't know the way, listing them one by one so carefully, even Han Chen himself had a little headache, there were really a lot of things to practice!

"Hehe, you don't have to worry about this, the cultivation of Qimen Dunjia can be carried out together with soaking in the 'Yuan Spirit Liquid' to refine the flesh, and it won't take up any other time for you!" Guiguzi said with a chuckle.

Hearing this, Han Chen's eyes lit up, since he didn't have to take up other time, Han Chen naturally had no opinion, not to mention, even if he had to take up other time, Han Chen would not give up practicing the art of Qimen Dunjia.

Guiguzi's mastery of alchemy and the way of refining weapons, Han Chen can only practice by cultivating the Samadhi True Fire to the first heaven of the Wood Fire Realm and containing the fire in the wood.

But looking at it now, there is still a long way to go before we can practice the true fire of Samadhi.

First of all, Han Chen had to solve the problem of the cold ice spirit crystal in his body, and then cultivate the internal breath and break through to the sword guard level, so that he could cultivate the Samadhi True Fire.

Only when the Samadhi True Fire has been cultivated can one begin to practice alchemy and refining weapons.

And the key to solving the Cold Ice Spirit Crystal lies in the 'Melting Blood and Easy Bone Pill'. Only by breaking through the 'Naling Nine Styles' into the eighth layer, the physical strength at that time barely reached the requirements of taking the 'Melting Blood Yi Bone Pill', but it was only up to the standard.

You also have to look for some special herbs and genius treasures as aids.

Otherwise, how could the 'Melting Blood and Easy Bone Pill', which can change the physique, be taken so easily.

Therefore, this samadhi true fire is basically out of contact with Han Chen in a short period of time.

And the Qimen Dunjia technique is a very powerful means whether it is used to assist one's own cultivation or to deal with the enemy.

Moreover, it is also the only one that Han Chen can practice at the moment, so how could Han Chen give up in such a situation.

Quickly fill the bath bucket with clean water, and after Guiguzi drips a drop of amber liquid into it, the water in the bath bucket quickly turns into an amber color, which is extremely gorgeous.

Han Chen immediately took off his clothes, entered it, and sat cross-legged.

The exercises in the body were running slowly, and the surrounding heaven and earth aura carried amber gas from Han Chen's mouth and nose and countless pores all over his body slowly poured into his body, moisturizing and refining the muscles, bones, and flesh in his body.

"Teacher, what should I do?" Han Chen's heart moved, the exercises worked quickly in his body, and he opened his eyes and looked at Guiguzi and asked in a deep voice.

"To separate a trace of mind, you only need to control the operation of the exercises in your body. The mind is gathered, and the soul power is gathered in the sea of knowledge!" Guiguzi snorted lightly, and the next moment Han Chen's sea of knowledge appeared.

According to Guiguzi's instructions, Han Chen departed a trace of his mind to control the exercises in his body to operate on his own. Then he began to gather the amount of soul power scattered around his body and gathered in the sea of consciousness.

Han Chen was surprised to find that this dual-purpose method was actually effortless to do by himself.

However, Han Chen was only initially surprised, after all, the teacher could control more than 100 herbs to refine the pill at the same time, and he was just single-minded, so it was not a big deal.

In fact, Han Chen didn't know that his soul power was stronger than ordinary people, even compared to some martial artists, it was an extremely strong existence.

What's more, the last time he was in the waterfall, Han Chen's soul had also been condensed, making his soul power even stronger.

Han Chen tried his best to gather all his soul power in the sea of knowledge.

The next moment, a slightly illusory figure appeared in a void, it was Han Chen.

This was the first time that Han Chen had gathered all his soul power and gathered into the Sea of Knowledge, and it was also the first time he had entered the Sea of Knowledge.

Han Chen looked at his illusory body in amazement, and then looked around.

This void seemed to be boundless, with no end in sight, and everywhere you looked, it was all white, with no clouds, no wind, no water, no mountains, and nothing.

However, Han Chen was only slightly surprised, and even turned his gaze on the old man in front of him, who was Guiguzi.

I saw that Guiguzi's eyes were slightly closed at this time. But the next moment, the eyes of the micro-jaw suddenly opened, and the slightly illusory pupils flashed, and the hands were folded, and the knots were formed, and the hands changed rapidly, bringing up pieces of afterimage.

I saw that with each seal knot formed by Guiguzi, a black soul would fly out of his slightly illusory body and rush around, and then dissipate into the surrounding void.

Eighty-one knots fell in a row, and when Guiguzi completed the last knot with both hands, his eyes opened suddenly, his tongue was full of spring thunder, and he burst into a shout.

"Now!"

After a while, Han Chen was shocked to find that under Guiguzi's body, a giant gossip map with a radius of thousands of kilometers appeared in the center.

The giant gossip map was exactly the same as the gossip map that Han Chen had seen in his previous life, but if there was anything different, it was that the giant gossip map under his feet was too big.

With the gradual formation of the giant Bagua map, eight huge and simple fonts slowly appeared on its eight faces.

They are Qian, Kan, Gen, Zhen, Xun, Li, Kun, and Dui, which correspond to the eight directions of the Bagua diagram.

With the formation of the giant gossip map, Guiguzi divided his hands, scattered the seal knot in his hand, and slowly stood up.

Although Han Chen was shocked by the giant gossip under his feet, as soon as Guiguzi moved, Han Chen noticed it.

As soon as he saw Guiguzi, Han Chen was stunned, and immediately hurriedly stepped forward, hugged Guiguzi, and asked anxiously, "Teacher, what's wrong with you?"

I saw Guiguzi's originally illusory but condensed body, how could there be the slightest sense of solidity at this time, but it was even more transparent and illusory.

"Hehe, it's not in the way, being a teacher is just an excessive consumption of soul power, and you can recover as long as you meditate for a few days. Looking at Han Chen's anxious appearance, a hint of relief flashed in Guiguzi's eyes, and then he shook his head lightly and said with a smile.

Hearing Guiguzi say this, Han Chen's tightly held heart relaxed, but he still felt heavy in his heart, which was very uncomfortable.

The injury on Guiguzi's soul had not healed in the first place, and now it was so consumed, which made Han Chen's heart warm and at the same time firm in his faith.

Be sure to shape the teacher's body as soon as possible, although it may be extremely difficult, but you will never give up.

If before that, it is best to find a medicinal herb that heals the soul. Han Chen kept these thoughts firmly in his heart.

"Teacher, this" Immediately, Han Chen refocused his gaze on the giant gossip map in front of him and asked Guiguzi.

"Hehe, the technique of Qimen Dunjia originated from the Bagua Diagram. Therefore, as a teacher, he recorded all the Qimen Dunjia techniques he knew on this giant gossip map!, you only need to use your soul power to slowly comprehend!" Guiguzi stroked his chin and said with a faint smile.

"Then where should I start?" Han Chen couldn't see anything else on the gossip map at all, and immediately asked suspiciously.

"Well, you don't even have a beginner yet, and you can't comprehend those high-level formations, so let's start with the beginner formation!" Guiguzi said slowly after a little thought.

Immediately, I saw Guiguzi raise his hand and wave at the giant gossip map below, and the giant gossip map slowly rotated, and after turning for a while, the gossip map stopped again.

At this time, Han Chen found that the 'dui' position on the gossip was facing his feet.

I saw Guiguzi make the seal knot again, but this time there were only three seal knots, and it was completed in an instant, and Guiguzi snorted softly.

"Duh!"

The next moment, Han Chen only felt a flicker in front of him, and found that he was already in a yellow space at this time.

"This is the introductory formation 'Thousand Heavy Array' recorded in the Bagua Diagram's 'Dui' position. You can start with the 'Thousand Heavy Array' first!" Guiguzi beside him commanded Han Chen.