The classics displayed on the crystal screen are all precious to Xu Yi.

As if he had found a treasure, he did not hesitate to push in the spirit stone and click on a copy of "Summary of Space Debris", and after a while, the conveyor belt sounded softly, and a thin book came out.

This book, which only has more than 10,000 words, cost Xu Yi more than 100 spirit stones.

Xu Yi didn't feel expensive at all, and quietly flipped through it, and at the same time, he took out a video bead and picked up the words on the page.

After half a cup of tea, this book of more than 10,000 words was not only completely photocopied in the audio-visual beads, but also stored in the depths of his mind like an engraved.

Immediately, Xu Yi threw in the spirit stone again and clicked on the second classic.

Shicai's "Outline of Space Debris", he only skimmed it once, and then he appreciated seven or eight points, and the mystery in his heart was big again, so he had a lot of money in his pocket now, and in exchange for knowledge, he naturally spared no expense.

What Xu Yi didn't expect was that after reading it all the way, he actually entered a strange circle, and he couldn't stop at all, and in two hours, he clicked on more than 60 books, which cost nearly 20,000 spirit stones.

From "The Accumulation Effect of Space" to "The Conjecture of the Origin of the World", to "The End of the World", and even "The Measuring Field of the Boundary Card", "The Spatial State of Shuttle".

Picking up books all the way, Xu Yi flipped through them all the way, and with his excellent comprehension ability, although he did not say that he had comprehended more than 60 classics, at least he basically understood the content he was concerned about.

Among them, Xu Yi has always wanted to know the "whole picture of this world", of course, the classics are only conjectures, the most popular and realistic conjectures made according to ancient legends are the theory of the four continents, the four continents constitute the whole world, which is the horizontal axis of space

The wilderness, the ancient, the wilderness, and the present, constitute the longitudinal axis of time.

However, this conjecture does not explain what kind of relationship the existence of the Northern Holy Court is located with the Four Continents Theory.

The only speculation that has emerged is that the great world where the Northern Sacred Court is located is probably only space debris from the four continents, just as the space debris around the Northern Sacred Court is to the Northern Holy Court.

Of course, this is just a conjecture, although it may not be all right, but this conjecture has helped Xu Yi establish a relatively complete world view in his mind.

In addition to exploring the whole world of the whole world where he was accommodating, Xu Yi put more effort into the research of space debris nodes, as well as the use of boundary cards and shuttle to trace the source.

The statement of the soap-clothed attendant is really good, reading here, it is true that you can't get in touch with profound knowledge, but because of the wide range of contacts, as long as you are willing to spend money, you can indeed touch the class and understand it.

At least Xu Yi spent a lot of money and read the books for these two hours, and there was no waste, and he did find a lot of important knowledge.

Just as he thought when he didn't finish the ten thousand library vaults, if he wanted to shuttle back to Dayue, relying on the starry sky locking technique alone was obviously not reliable.

The reason is very simple, he can go alone, but he will never go back, at least Yan Zi has to come back with him, not to mention, he also promised An Qinghou and Huang Wuji, especially An Qinghou, he had set a time with others.

According to the different time flows of the two realms, the agreed period has now passed.

Xu Yi is a man of his word, and if possible, he must help An Qinghou achieve his wish.

If this is not possible, you must solve Yanzi's troubles first.

After reading for these two hours, Xu Yi gained a lot, at least there would be no more situations like when Da Yue penetrated the Northern Realm Holy Court, and he was naked.

Lying on the soft couch and resting for a while, Xu Yi got up and left the Wanzang Library and returned straight to Lengyang Peak.

Speaking of which, he didn't have the consciousness of the head of the sect at all, and he just sat on the first gate in the world to the level of advancement, and more often, he also sat Leng Yangfeng in the place where he stayed.

Unexpectedly, his return caused a sensation.

The second generation and the third generation of disciples gathered in Lengyang Peak to congratulate him on his promotion to the second-level star official.

Zhao Wuliang and other second-generation disciples, everyone was in a vein, fell into a strong excitement, and it was difficult to restrain themselves.

At the beginning, his generation took refuge in Xu Yi, but he was simply desperate, greedy for the generous salary given by Xu Yi, who would have thought that in just a few months, Xu Yi had risen to the top, and now he is a second-level star official in Huaixi Mansion.

The first gate in the world has also ascended to the sky, and in just a few days, the power of the attached ones has increased day by day.

Xu Yi's current mind was not at the mountain gate at all, and after dealing with the two sentences, he dispersed everyone, leaving Zhao Wuliang alone to report the situation.

After listening to the recent situation, Xu Yi was noncommittal, and gave two thousand spirit stones, and asked Zhao Wuliang to issue them on his behalf and attract new recruits.

Immediately, Xu Yi entered the cave and began to study the art of controlling electricity.

This thaumaturgy is complicated, but it explains the truth thoroughly, Xu Yi only needs to rely on his own understanding, guided by the truth, and many experiments.

In just three days, he has completely mastered the trick of controlling electricity, and his body is moving, the whole thing is like lightning, and he is truly instantaneous, even if it is compared to Tu Xingchen, who impressed him with his strength and strength that day, Xu Yi at this time also thinks that he can be slightly better.

Mastered the art of controlling electricity, Xu Yi got out of the cave, galloped towards the mountainside, galloped to the happy pavilion with clear water on the mountainside, rested for a while, replenished the water and meat, and immediately went down the pavilion, uncovered the boat tied to the ancient wood on the side, and went down the river.

With the turbulent current, the boat poured out and went straight into the lotus swing.

Xu Yi's perception was released with all his strength, he glanced at it, and then jumped into the water, sinking straight to the bottom, and when he came up again, the Sumeru ring on his chest was gone.

Yes, Xu Yi is here to bury the Sumeru ring.

He studied the classics, so that he made a lot of progress in space shuttle, but the Sumeru ring is a different dimension, and different spaces cannot overlap, so he can't travel with the Sumeru ring.

Helpless, Xu Yi chose here, sank the Sumeru ring into a hundred acres of lotus flowers, and only waited for the success to return, and then took it out.

After sinking the Sumeru ring, Xu Yi and Lao Cai explained, and Xu Yi took off.

He was anxious to find Yan Zi, and when he thought of the misery that Yan Zi might encounter, his heart burned like fire.

Xu Yi spared no effort to urge the electric control technique with all his strength, and his speed far exceeded that of the trap bird, so fast that his existence could not be seen in the air at all.

After nearly five hours of driving, when the crescent moon floated up the East Mountain, Xu Yi rushed to Shatai Valley and found the site he shuttled to for the first time.

Xu Yi wants to return to Dayue, and it is undoubtedly a wise move to choose the node of space debris.

Sensing all the strength of the outward release, after the investigation was completed, there was nothing abnormal, and suddenly, Xu Yi's index finger broke, and a sticky blood bead flew to Xu Yi and attached it to the center of his eyebrows.

Xu Yi silently recited the mantra, the red light flashed at the center of his eyebrows, and he looked up, and the scenery was steep.