It took less than a stick of incense for Li Ling to collect and sort out all the classics signed by Dong Xuzi, which were a "Commentary on Pure Yang Jue", a three-finger-thick notebook, and some essays.

"It looks like a top student's job. Looking at the jade slips and thread-bound books on the desk, Li Ling complained.

Turning the page of "Pure Yang Jue", after reading less than a page, the expression on Li Ling's face became a little subtle. Unlike what he thought, "Pure Yang Jue" is not the kind of secret mantra that is obscure and difficult to understand, but uses a flat and straightforward tone to clearly explain how to perceive and absorb the spiritual power molecules that are free between heaven and earth.

Yes, Dong Xuzi called Reiki a spiritual power molecule, and in that book "Commentary on Pure Yang Jue", he spent about 5,000 words systematically dissecting the physical and chemical properties of spiritual power molecules. Such a rigorous style made Li Ling in a trance, and an inexplicable sense of familiarity came to his face, just like reading professional books in the library when he was in college.

It was only now that Li Ling finally understood why Tang Tang couldn't read "Pure Yang Jue" a little, because the way this exercise was written was very similar to an academic paper on earth.

Li Ling's heartbeat gradually accelerated, and a bold guess appeared in his mind.

The predecessor of Dong Xuzi who created this "Pure Yang Jue" is very likely to be a time-traveler from the earth!

Suppressing the excitement in his heart, Li Ling continued to read "Pure Yang Jue", this suspected to be the predecessor of the Cave Void Son, who was trying to explain the occultism of the Tianyang Spirit Realm with earth science throughout the text. These arrogant words, which seem to others to be insignificant, are extremely kind in Li Ling's eyes.

Dong Xuzi studied spiritual molecules thoroughly, and wrote in his notes that this ubiquitous element in the Tianyang Spirit Realm had an impact on many things in this world.

For example, human beings can ingest spiritual molecules through spiritual veins, just like ingesting oxygen molecules through the trachea, and the reason is the same. Oxygen molecules are dissolved in the blood and transported to various parts of the body through hemoglobin to supply the body with energy for life. After the spiritual power molecules enter the body, they will follow the spiritual veins for a week, circulate to all parts of the body and continuously strengthen the physical fitness.

Therefore, he boldly assumed that the spirit vein, a special organ that absorbs spiritual power molecules, was evolved by humans in the Tianyang Spirit Realm. After all, powerful monks conform to nature's evolutionary norms of survival of the fittest. Dong Xuzi also pointed out that in addition to humans, birds and beasts have also learned to ingest and apply spiritual power molecules in the process of natural selection and evolution, and their bodies have also undergone some mysterious changes under the influence of spiritual power molecules, such as being larger in size, stronger in strength, and even breathing fire and spitting water. And these animals that can use spiritual power are called demon beasts. However, compared to humans, the spirit veins of demon beasts are relatively closed, so their cultivation speed is very slow, but they have a special way to improve their strength, and that is to devour. It's just that Dong Xuzi didn't leave any detailed information in this area, and only mentioned it in vague terms.

The "Pure Yang Jue" expounds the specific cultivation methods, and the "Pure Yang Jue Commentary" analyzes the exercises. The codex and notes are completely Dong Xuzi's predecessors' scientific explorations of the Tianyang Spirit Realm, and they also come with his experimental records.

Li Ling was just about to put away his notes, when suddenly a yellowed thin piece of paper slipped from it. Seeing the ink on it, Li Ling suddenly became startled, and picked it up as if enchanted, because the text on this piece of paper was not the text of the Tianyang Spirit World, but Chinese Simplified!

This Cave Void Son senior is really a traverser, and like himself, he comes from the Celestial Empire!

After reading the words on the paper, Li Ling's guess was confirmed, and Dong Xuzi was indeed a time-traveler from the earth, whose original name was Zhou Yuan. The time he traveled through was 1959 A.D., which was only 60 years different from the era in which Li Ling lived, but he was already an old-timer of Chunyangmen hundreds of years ago.

The cave Xuzi who crossed over here was not interested in cultivation, but he was very keen to explore the different ecosystems of the Tianyang Spirit Realm. In his later years, Dong Xuzi's health gradually weakened, so he began to study the method of traveling back, but unfortunately he got nothing.

"If you can travel back in time with these achievements, you will definitely win the Nobel Prize. Li Ling smiled lightly after reading this, feeling a little lonely in his heart. But after thinking about it, crossing has become an established fact, and there is no point in dwelling on it, just treat it as a new life and start over.

After reading "Pure Yang Jue", Li Ling couldn't help but be a little eager to try, after all, under Dong Xuzi's explanation, the introduction of qi into the body is simply like breathing.

Li Ling sat cross-legged, closed his eyes, and tried to keep his heart absolutely calm, Dong Xuzi's suggestion was to try to sketch out something in his mind with imagination to enter a meditative state.

After a while, Li Ling really felt the spiritual power molecules that existed around him, and the magical elements that were usually invisible to the naked eye flickered like fireflies at this time.

There are a total of nine spiritual veins in the human body, which are distributed throughout the body, and each spiritual vein has a vein gate at the end. If you have just embarked on the path of cultivation, such as Xiaoguo, you must first learn to open the pulse gate and draw qi into the body through the pulse gate.

The first realm of cultivation is called the Fengchu Realm, which is divided into nine small stages according to the number of opened veins. Before Li Ling lost his cultivation, seven of the Nine Great Veins had already been opened, so he used to be in the Seven Veins Realm of Fengchu.

With such a foundation, Li Ling's qi induction into the body was very smooth, and as soon as his mind moved, the spiritual power molecules around him were all sucked into the spiritual veins. If he followed the "Zixia Heart Method" that Li Ling had cultivated before, then he would have to operate these spiritual power molecules according to a certain route and refine them into Zixia Qi. However, the spiritual power operation route of "Pure Yang Jue" is completely different, almost the opposite of "Zixia Heart Method". Those spiritual vein routes that were not used in the "Zixia Heart Method" were the main routes of the "Pure Yang Jue".

After trying to circulate in the body for a week, the spiritual power molecules gradually changed into pale gold, and this transformation process was seen by Li Ling, which was unbelievable.

Dong Xuzi's predecessor is also committed to exploring the reason, and his conjecture is that the "digestion" effect on spiritual power molecules is different due to different spiritual vein routes. So he had always wanted to dissect the monk's corpse to confirm his thoughts, but he never had the chance.

He's a science maniac......

After doing another weekly cycle, Li Ling glanced at the hour, and it was already late at night. I was indeed a little sleepy, but I was a little absorbed in reading the notes of Dong Xuzi's predecessors, and I didn't notice it. Putting away the jade slip of "Pure Yang Jue" and blowing out the candle, Li Ling got up and walked out the door.

The bright moonlight sprinkled on his body, and Li Ling couldn't help but yawn. The starry sky at night in the Tianyang Spirit Realm is very bright, probably because there is no light pollution. However, just as Li Ling looked up and counted the stars, a meteor suddenly crossed the sky, which was extremely dazzling, making Li Ling a little unable to open his eyes.

Just when Li Ling was thinking about whether to make a wish, the "meteor" passed over his head almost instantly. However, it was at this moment that he saw that this so-called "meteor" turned out to be a figure!

What is the situation? Someone is flying? Li Ling was so shocked that he couldn't close his mouth, stared at it deadly, and pinched his thigh by the way. However, to his surprise, the "meteor" fell not far from him after passing over Li Ling's head, and the direction of the landing should be in the back mountain of Chunyang Gate.

Curiosity, it only took less than a second to defeat Li Ling's caution and reason, driving him towards the back mountain, along the way he was still convincing himself that he would just take a look from afar and leave, and it would definitely be fine!

After the "meteor" figure fell, he began to look at the surrounding environment, and reached out to take out a silver glittering and sci-fi looking instrument from the satchel on his waist, and muttered while poking at the LCD screen above: "What kind of rural plane is this, where birds don't poop and chickens don't lay eggs, Xuan, is your built-in navigation program reliable?"

"My navigation program is based on the Tianyan system, and there is absolutely no mistake. Collecting plane information, please ...... later" A female voice came from the instrument in his hand, "This is a low-level cultivation plane codenamed Tianyang, with high aura coverage and low spiritual energy concentration. ”

"Sure enough, it's the ...... of the country plane" The figure casually threw out a metal ball, and as soon as the ball hit the ground, it bloomed with light, illuminating the surroundings at the same time, hundreds of light blue runes spread out around, embedded in the land, echoing each other. The figure waved his hand slightly, and a pale blue barrier enveloped the area.

In the light, the figure also showed its true face, with an ordinary appearance like a passerby, with messy short black hair and a pair of round-rimmed glasses on the bridge of his nose. Wear simple canvas shoes, washed blue jeans and a black and red plaid shirt.

The only thing that didn't look so ordinary was the top of his head, with a golden halo hovering.

"In order to do this mission, I have traveled a total of 15,607 planes, and I have also set up a portable defensive talisman array!" the young man looked at the barrier around him, his face aching, "If I can't successfully complete the task this time, I will lose a lot!" Xuan, start scanning the void rift and help me prepare for the battle. ”

As soon as the words fell, the silver instrument in the young man's hand suddenly emitted a blue light curtain, like ripples in the water radiating to the surroundings.

Li Ling hid behind a tree, leaned out half his head and watched the young man's series of movements from a distance, but because of the distance, he couldn't hear what he was saying.

The female voice sounded again: "The True God Rank Void Rift has been scanned, and the specific location information has been transmitted. ”

The young man nodded, put away the instrument in his hand, and said in a low voice, "Is it the true god class...... It's a bit tricky. ”