Seeing Yang Yiqing's embarrassed face, Zhang Yuwei knew that he needed to guide him at this time, so he asked.

"Since you don't know how to absorb the Dan Energy from the outside world, then tell me, why can't you directly absorb the Dan Energy from the outside world?"

"This is because the Dan energy in the outside world is too thin, even within the Tianwu Sect, there are very few Dan energy, not to mention the earth where the aura is thin, in fact, what exists between heaven and earth is more of the true qi used in refining qi and building the foundation, once the void pill is formed, it will be difficult to cultivate with the help of heaven and earth."

Yang Yiqing's answer can be described as a standard answer, as he said, the basic essence contained in heaven and earth is true qi, and Dan energy is produced through the cultivation of cultivators, and Dan energy is not brewed between heaven and earth, only some changes in heaven and earth will produce Dan energy, which is also the reason why it is extremely difficult to directly absorb Dan energy from the outside world.

"Let's talk about it, the principle of building a foundation realm to break through the Void Dan Realm"

Zhang Yuwei continued to ask Yang Yiqing questions, in his opinion, the answer to this matter was not to tell him directly, it was better to let Yang Yiqing explore.

"The principle of breaking through to the Void Dan Realm is to continuously compress the true qi in one's body, so as to form the Void Pill, and use the Void Pill to refine the true qi into Dan energy, so as to cultivate ......"

Speaking of this, Yang Yiqing seemed to have thought of something, he thought about it carefully, and then looked at Zhang Yuwei in surprise and said.

"Uncle Shi, are you saying that the principle of absorbing Dan energy from the outside world in "One Qi Returns to the Yuan" is actually not to absorb Dan Neng, but to absorb true qi and transform it into Dan Neng?"

"Looks like you've got it"

Zhang Yuwei nodded and said.

"The "One Qi Returning to the Yuan" created by the Tianwu Ancestor is complete, the reason why you think there is a problem with the seventh chapter is because you have not studied in the Tianwu Sect, so you don't understand the formation used in the supporting "One Qi Returning to the Yuan", through the formation, the true qi is converted into Dan Neng, so as to absorb the body, so that you can carry out the cultivation of the seventh chapter of "One Qi Returning to the Yuan"

"Array...... Formation, I have been thinking and meditating for many years, but I didn't expect that it was actually a formation"

Yang Yiqing's whole body trembled with excitement, and then he bowed three times to Zhang Yuwei and said respectfully.

"Disciple, Uncle Xie for his kindness"

"Hurry up, in fact, there is no way to arrange the formation of the Tianwu Sect on the earth, so the "One Qi Returns to the Yuan" must be practiced within the Tianwu Sect from the seventh chapter, but the different formations are just fit, and they can also be achieved by using ordinary energy transfer arrays."

Zhang Yuwei finished the last on-demand Yang Yiqing, and Xiang Yu stood upright, the energy transfer array is the lowest formation, this formation is developed by earth cultivators, it is basically a sect capital, and it is also the most commonly used formation for most Void Dan Realm cultivators today, how to arrange it, he definitely doesn't need to teach Yang Yiqing, Yang Yiqing bowed his head respectfully, and after Zhang Yuwei and Xiang Yu walked away, he stood up, flicked the soil on his body, and happily turned into a streamer and disappeared.

Yang Yiqing's matter was like a small episode, but it delayed Zhang Yuwei and Xiang Yu a lot of time, the two saw that the sky was gradually darkening, and they had no residence, so they had to return to the center of the Beihai Sea View Area along the same road, they found the location of the hot spring scenic spot according to the map, Zhang Yuwei pointed to the hot spring scenic area.

"How about a hot spring?"

"Hmm, hot springs?"

Xiang Yu seemed to be a little moved, he did not refuse to soak in the hot springs, and even wanted to try, in fact, Xiang Yu had already turned to the hot spring scenic spot at the beginning, but he didn't know what hot springs were, after all, there was no hot spring in ancient times, and then I read the introduction to know that now Zhang Yuwei proposed, Xiang Yu was naturally in favor, so the two of them went to the hot spring scenic spot.

The hot spring scenic spot of Yellow Mountain is still quite famous, the misty hot spring is like a fairyland, so the hot spring scenic spot is also called the peach source fairyland, as one of the five uniques of Yellow Mountain, the hot spring is very distinctive in Yellow Mountain, it is said that Xuanyuan Yellow Emperor has bathed here, the spring water can be wrinkled and eliminated, rejuvenated, and therefore called the spiritual spring, this spring is generally not open to the public, after all, it is rich in aura, but during the world discussion period, there are very few people who come to the hot spring scenic spot, basically everyone stays in their own residence to sharpen their knives, and therefore, When Zhang Yuwei and Xiang Yu rushed to the hot spring scenic spot, there was no one, not even a staff member.

So, Zhang Yuwei simply summoned the Xuanyuan Sword to soak in the hot spring together, as for the wind, Zhang Yuwei did not call her out, first, the wind is the daughter's body, not good, second, the wind is too talkative, not suitable for this kind of relaxing activities, Zhang Yuwei and Xiang Yu leaned against the wall comfortably, half of the body was immersed in the water, Xuanyuan Shenjian was floating on the water and soaked the whole body, because the hot spring is open-air, so the two of them soaked in the hot spring while enjoying the night scene that gradually appeared, and it didn't take long for the sky to get dark.

"This hot spring, the Yellow Emperor has not soaked in the old man I don't know, but the old man has definitely not soaked in this spring, it is very likely that the Yellow Emperor took me off and put it aside at that time"

The old god of Xuanyuan Divine Sword sighed that Jian Sheng was worried, obviously his first master was so famous, but he didn't take him to experience anything, Xiang Yu had been watching around, and finally, he looked at Zhang Yuwei and asked with some expectation.

"Have you prepared wine, this king is thirsty, Snow Mountain Brew, Medicine Immortal Brew is OK"

"Kunlun and Yaoxian Valley's special wine, where can I give you the whole, why do you suddenly want to drink?"

"This hot spring, if there is no pot of soju, this king will always feel unhappy, alas, forget it, this king will go to find wine to drink"

After speaking, Xiang Yu went out of the hot spring directly, he definitely couldn't go naked to find wine, but he didn't want to go back to the dressing room, so he wrapped himself in a towel and left, Zhang Yuwei was very speechless for this kind of alcoholic person, he leaned against the wall with his eyes closed, enjoying the warmth of the hot spring, and he didn't know how long it was, Zhang Yuwei felt that someone was back, he estimated that it was Xiang Yu, so he didn't perceive it carefully, the other party entered the hot spring from Zhang Yuwei's side, Zhang Yuwei thought it was Xiang Yu who wanted to drink with him, suddenly, He felt that the other party's hand was very delicate and smooth, completely different from Xiang Yu's rough man's thick palm, Zhang Yuwei hurriedly opened his eyes and found that it was Su Miaoyan.

"Wonderful...... Emperor Miaoyan? ”

Seeing Su Miaoyan, Zhang Yuwei's eyes were straight, because he had already learned from the staff of the Cultivators Association that the Kunlun Society would arrive the next day, so Su Miaoyan would definitely not appear in front of Zhang Yuwei at this time, but she appeared, which made Zhang Yuwei dumbfounded, Su Miaoyan naturally knew what Zhang Yuwei wanted to say, she didn't wait for Zhang Yuwei to ask, so she preemptively said.

"Actually, Sister Li'er and I are here, after all, Sister Li'er is the Holy Maiden of Medicine Immortal Valley, and she can enter in the name of Medicine Fairy Valley, as for Sister Luochen, she and Kunlun's disciples are still behind."