Ye Xing took out the small cloth bag from the space ring, opened it with his divine sense, and took out the three books inside from it, the first one was very thin, only a dozen pages, it should be an extremely ancient book, all of them were engraved on animal skins;

The script is ancient, and it looks very similar to the script of the desert island, at least of the same kind, and although there are differences in strokes, it can be assumed that it is about the same period.

The three of them also came to see, the first one should be a book of cultivation, the second one is much thicker, it is alchemy, it is all ancient characters, and the last one is very thick, it is actually a notebook, it is written with a small pen, and the text is the text of the previous dynasty.

Ye Xing put away the first two books, picked up the notebook and flipped through it, only read a few pages, and found that it was miscellaneous, not for a while, but for more than ten years, as well as the perception of cultivation, family affairs, and the description of love.

Ye Xing felt that it was just a literary youth's mood diary, messy, everything was messy and crowded together.

Now he is not in a hurry to study anything, Ye Xing still put the book in the small cloth bag, and then took the small cloth bag and looked at it a few times, thinking that this storage bag, the small one is quite useful.

Put the small cloth bag into the space ring, and then scan the entire imperial city with his divine sense again, Ye Xing found that there are actually many buildings in the imperial city, and the scope is still very wide, and now there is nothing intact at all, and there are obvious traces of man-made destruction in many places.

Ye Xing didn't feel the need to look for anything anymore, because it was obvious that no one had been there to hunt for treasure before, so it was unlikely that anything precious still existed.

Now that the horse is dead again, it is impossible to walk, so it was decided to take a hot air balloon ride.

Ye Xing took out the hot air balloon, and then the four of them assembled it together, lit the flames, and the balloon slowly rose into the air.

Ye Xing felt the direction of the wind, increased the flames, rose a few hundred zhang, and found that this air flow was northward, and then let the hot air balloon float downwind.

Because it rises very high, the things on the ground are completely unclear, and the distance is full of clouds, and when you look at it through a telescope, it is all yellow sand and mixed with snow, which is very monotonous.

The two eagles couldn't fly to this height, and Ye Xing's divine sense made them fly in the same direction as the balloon.

High in the air, everything is good, it's just too cold, Ye Xing is okay, the other three can't stand it, and they fight the cold, but after an hour, they can't stand it, they don't care at all, and they are very hungry, especially the two girls are pale in the face, so they can only let the hot air balloon go down.

When it fell to the ground, it was blown by the wind for dozens of miles, and basically did not advance much.

There was still nothing but yellow sand, but, fortunately, Ye Xing unfolded his divine sense, there was nothing nearby, so the two eagles were guarded in the air, and the four of them set up camp on the spot.

Ye Xing first put away the hot air balloon, and then took out the camp materials, and the four of them quickly completed the camp.

Qi Ming took the stove and began to cook food, while the two women were tidying up the four tents.

Ye Xing sat quietly, and then spread his divine sense, within five miles, it should all be under his supervision, plus the two eagles in the air, but there is no need to worry too much.

The only thing to think about is that the things that come from the underground, the strange insects made Ye Xing realize last time that the most terrifying danger is from the underground.

Ye Xing's divine sense could only detect three feet below the ground of a few hundred zhang nearby, and with the lesson from the last time, he no longer dared to be careless.

After Qi Ming gave the two eagles two large pieces of barbecue first, the four of them gathered around to eat again.

Qin Jingxuan said, "It is possible to avoid danger in the air, but we can't stand it ourselves, the skill is too far away, and there is no good way to keep out the cold." ”

Ye Xing shook his head and said, "Our skills are too shallow, in the air thousands of feet, it's too cold. So it's not the most necessary, we still have to go, but according to my estimate, if we go, we will have to walk for a year to get to Mobei. ”

Qin Xinyue stuck out her tongue and said in surprise, "A year?!" ”

Ye Xing said, "Yes, on the sand, our travel speed is only half of the usual, according to my speculation, it really takes a year!" ”

Qi Ming's face was still pale, and he said a little sadly, "It's only been more than a month since we came out, and I can't stand it anymore!" ”

Qin Jingxuan was also a little frustrated, and said, "Just now in the sky, I was about to run out of gas, it was completely supported by true qi, or Ye Xing kept exporting the aura in the space ring to help us, if we don't come down, it will definitely be too late." ”

Ye Xing thought for a moment and said, "I have thought of a method, you may have to work hard, do you want to do it?" Perhaps our cultivation can be greatly improved. ”

Qi Ming asked, "Master, there's nothing you can do, don't go to the sky anymore, we can't achieve it now." ”

Qin Xinyue also said, "I'd rather walk, I really don't want to suffer from that extreme cold anymore." ”

Ye Xing said, "I found that there is a method of introducing breathing cultivation in the cultivation method I got in the deserted city, if we learn it, it should help us a lot!" ”

The three of them looked at Ye Xing happily, all extremely interested.

Ye Xing said, "The yellow sand here is thousands of miles, if we can cultivate to the point where we can breathe on our own even if we are buried in the sand, then we won't hold our breath in the sky!" ”

"It's okay to be underwater in the future, it's a real skin breathing method, and it's also a great benefit for us to sit and rest in the future. Moreover, it can also allow us to truly go further in our cultivation, and it is not in vain that we have come here. ”

Qin Xinyue said a little scared, "It's not necessarily safe here, under the yellow sand, there are dangers everywhere." ”

Ye Xing said, "Yes, so I will protect the Dharma for you first, so that you can learn." In the past, we only cultivated True Qi, and we didn't really use it at all, but in fact, True Qi has a great effect, not just to prolong life. ”

Ye Xing memorized the text about the breathing method in the ancient book, and then explained it to the three of them, and then explained his understanding in more detail twice, and asked the three of them to memorize it.

This exercise is actually more suitable for people with earth attributes to cultivate, but after Ye Xing's careful deduction, he found that the core is the method of introducing oxygen and releasing carbon dioxide from the pores on the skin, so as long as the pores on the skin are connected to the capillaries for gas exchange.

This exchange is actually the same as the exchange process in the human lungs, except that at the beginning, the process must be guided by the divine consciousness, and after success, the process must be exercised into an autonomous function of the human body, then there will be no problems in the future.

Moreover, the pores of the human body are extremely numerous, and there are trillions of them, and they can also replace the function of the human lungs after success, in fact, many organisms have such abilities.

I have heard that there are such creatures in the water, which breathe through the skin, and there are also such beasts in the soil, which can also survive for years without eating or drinking, and all of them live by sucking a little bit of the earth from their skin.

It's very simple to say, but the three of them have no knowledge of the subtle structure of the human body, nor do they have knowledge of chemistry, Ye Xing does not explain the principle, the first step is just to let them train to use true qi and internal force to act together on the skin to adjust pores.

Ye Xing himself demonstrated it first, let the three of them use a magnifying glass to carefully observe the pores on the back of his hand, and then use the internal force and true qi to work together to adjust, guiding the divine sense, internal force and true qi to participate in the very subtle work process on the skin, so that the capillaries carry out the process of gas exchange.

In fact, all this is the most subtle control of his body, Ye Xing himself is part of the pores on the back of his hand to achieve this function, if all the trillions of pores in the body are all realized this function, then he can breathe on his own anywhere in the future.

The three of them observed carefully with a magnifying glass for a long time, and continued to listen to Ye Xing's explanation of the details, and they all gained a lot, this is an extremely useful and powerful ability, it should definitely be trained well, and it must be an extremely great ability to learn this exercise.

According to Ye Xing's method, the four of them came to train together, starting from the back of the hand, and the basic requirement was to consciously control the very subtle muscle nerves on the back of the hand.

Ye Xing learned very quickly because he had all the five elements, and Qi Ming's earth attribute was the most suitable for this skill, so he comprehended it the most.

The second daughter's cultivation progress was a little slow, but after a night of hard work, the second daughter also found that she could control the subtle muscles on the back of her hand.

For twenty days in a row, they stayed in this place and did not move, and the four of them just practiced this exercise, as if they had completely forgotten about other things.

Ye Xing had successfully cultivated all the pores of his upper limbs, and he could basically cope with his needs for simple breathing.

Qi Ming was the most powerful, and directly asked Ye Xing to close his mouth and nose with glue, and forced himself to carry out skin breathing training, which took longer and longer;

At this time, the second daughter has also made great progress and can hold her breath for a long time.

After they all mastered the exercises, the four of them slowly continued to move forward, practicing the skin breathing exercises as they walked.