Yechen and Xu Tianchen talked for about half an hour, and no one knew what they were talking about.

During this period, Yechen also stuffed a tiny object into the other party's hands, and after talking, he met with Liu Yaxuan, and the three of them came to the cafeteria together and simply ordered some things.

"Brother Tianchen, you must keep in mind our conversation today, if there is an accident in the future, that thing can save your life." Yechen told with a solemn face that the stakes were very high, and he must ensure that his plan was foolproof.

If Xu Tianchen died, no matter how much he did, it would be in vain.

Xu Tianchen's expression was equally heavy, and he nodded to show that he understood the plan he had just said from Yechen, even he, the prince of the Sun and Moon Empire, who was accustomed to scheming, had to admit that it was strict and cautious.

Even, Yechen has already made a detailed plan for the future path, and even if there is a mistake in one link in the middle, there are other ways to deal with it.

What Xu Tianchen has to do now is to implement this plan.

In fact, Yechen didn't want to make everything clear, so when he told the plan, he kept it a little bit.

After all, this matter is no different from rebellion, the fewer people who know, the better, even if Xu Tianchen has preliminarily passed his test, but it is really hard to say about human nature.

Xu Tianchen has a huge weakness and feelings.

As long as he finds a way to catch Liu Yaxuan, no matter how firm his will is, he will tell the plan if he is not even.

On the way back to the lab.

Yechen released his spiritual power and constantly observed the every move of the people around him.

Half a month ago, he had met the mysterious black-haired boy here, so he wanted to see if he could meet him again.

However, the result disappointed Yechen, not to mention the other party's people, even the extremely evil aura at the beginning was not exposed in the slightest.

Yechen knew that the other party was likely to use that almost weird disguise ability, but a person's aura could not be easily changed.

The evil aura on the young man's body is so strong, Yechen doesn't believe that there is no trace of it that can be disguised, even if ordinary people can't find it, he has the opposite attribute in his body, and it is impossible not to notice it at all.

From this point of view, the other party did not appear here.

Yechen shook his head, this matter is not urgent at the moment, and he can only pay more attention to it in the future.

Looking at the two people holding hands in front of him, he not only remembered the people who were thousands of miles away: "I don't know what happened to Dong'er." ”

It's been nearly twenty days since he left Shrek, and too many things have happened in this short period of time, and Yechen has too many things to say to the other party, but he can't make a choice because of the heavy responsibility on his shoulders.

……

Unconsciously, the sun skipped due south, and the light cultivation deviated due west.

In the first room on the left hand of the laboratory, Yin Fan sat in front of the experimental table, playing with a dark blue rare metal in his hand.

"Deep Sea Emperor Crystal?" At that moment, a suspicious voice rang out in the room.

On the other side, the door was not closed, and Yechen's young figure appeared in sight.

"You come in first." Yin Fan was not surprised that the other party returned to the academy, after all, there were records of entering and leaving the laboratory, and after a little checking, he knew that Yechen had returned to the laboratory in the morning.

Yechen stepped forward and chuckled without scruples: "I'm back, old drunkard." ”

For some reason, he just suddenly wanted to call the other party like that.

Yin Fan didn't laugh angrily, in addition to the soul guide in his life, the most inseparable thing in his life was wine, and it was nothing to say that he was an "old drunkard".

People drink and make mistakes, but he is the opposite, sometimes a subject cannot be solved, often the most ordinary pot of wine, can let him find inspiration.

"Don't talk about this yet, tell me, how did you recognize this as the Deep Sea Emperor Crystal?" Yin Fan stared at Yechen with burning eyes, and his eyebrows were tightly wrinkled, fully revealing the doubts in his heart.

The reason why I was surprised was because the Deep Sea Emperor Crystal was used as a material for the production of the core formation of the ninth-level soul guide, even the soul masters below the eighth level in the Sun and Moon Empire didn't know much about it.

And Yechen, a teenager from Shrek Academy, shouted his name at the first sight of it.

Yechen suddenly had an aura, and a sly look appeared on his face: "Of course I know that in Shrek Academy, there are many such materials, and they are piled up in the warehouse, not only this material, but also other materials, but we lack the most important technology and can't make it into shape." ”

Speaking of this, Yechen focused his gaze on the Deep Sea Emperor Crystal in Yin Fan's hand: "And I also know that the darker the color of the Deep Sea Emperor Crystal, the better the quality, and this piece in your hand is only of a medium level." ”

Immediately afterwards, Yechen talked about the characteristics and functions of the Deep Sea Emperor Crystal, and even explained the origin clearly.

With these explanations, Yin Fan became more and more shocked in his heart, at first he simply thought that Yechen was bragging, but it wasn't until later that he saw that Yechen knew so much about the matter of the Deep Sea Emperor Crystal, and he couldn't help but doubt the letter again.

"I don't know how to make a draft, do you know how precious the Deep Sea Emperor Crystal is, and it's piled up into a mountain, I believe you're weird!" In the end, Yin Fan still chose to believe his common sense, thinking that what Yechen said was impossible.

It is true that Shrek Academy has a profound heritage, and he also believes that it can collect a large number of rare metals, but you must know that almost all of the remaining deep-sea emperor crystals in the continent are in the hands of the Sun and Moon Empire, and even if some are occasionally circulated, the number is extremely limited.

But what Yechen said after that instantly made him hesitate again: "If you don't believe it, you can go to Shrek City to take a look, I believe that it will definitely not disappoint you at that time." ”

Yechen suddenly had a strong sense of self-confidence, but Yinfan looked crazy on the surface, but he was actually very shrewd in his heart, and he quickly understood what Yechen meant.

"Okay, I won't listen to your nonsense, if it's okay, hurry up, don't bother me to study the soul guide."

Yechen shook his head helplessly, there is a good saying, you can never wake up a person who pretends to be asleep, Yinfan is obviously playing sloppy with him.

"Alas, these years, to be honest, I don't even believe it, forget it, Mr. Yinfan has another thing, although we are back, but this time we did not bring back any research results, you see......" After thinking about it, he still planned to ask.

Yin Fan had already guessed his intentions, waved his hand, and said impatiently: "You don't have to worry about this, I have already arranged it, and I won't be discovered by that old bastard." ”

The corners of Yechen's mouth twitched a few times, this old drunkard really didn't know any scruples, there was no doubt that the old bastard in his mouth must be Jing Hongchen.