Seeing Master Xu's urgent reaction, Tang Yu didn't know what to say for a moment. He rolled his eyes speechlessly and snorted coldly:

"My question is not the knowledge on the jade slip, but if I really study the contents in the jade slip, I will definitely understand what my question means..."

As he said that, the expression on Tang Yu's face turned into a sarcastic sneer, and he continued:

"What you said just now is that your formation level is indeed pretty good. I also thought at first that you should be able to improve in formation by learning the knowledge I gave you. But now, my judgment is wrong. Your personality makes you destined, and you cannot achieve much success in the formation."

"What's wrong with my personality?" Master Xu was confused by Tang Yu's severe scolding and asked foolishly.

"It's obvious that it's a very simple way to identify and judge problems. Because I didn't pause and thought carefully, I directly gave the final judgment. Do you think it's because of your personality problem?" Tang Yu said.

"I...I don't have such an idea." Teacher Xu almost burst into tears as if he was a primary school student who was taught a lesson by the teacher.

Seeing Master Xu like this, Tang Yu couldn't help but look shocked on his face. Obviously, he didn't expect Master Xu to be like this.

After grabbing his head in surprise, Tang Yu glared at Master Xu in dissatisfaction and said:

"Forget it, I won't say anything about you anymore. You can continue to study the formation knowledge in this jade slip! This time I remind you that you need not only superficial content, but also deeper content. In addition, you must calm yourself down, otherwise you will still not be able to make any progress."

"I understand." Mr. Xu lowered his head with a dull face, and a regretful expression appeared on his face. Perhaps because what Tang Yu said was too harsh, he didn't know how to deal with it for a while, so he lowered his head directly and did not dare to say another rebuttal from him, and directly agreed with Tang Yu's reminder.

Then, Master Xu left.

The other formation masters did not mock Master Xu when they saw this, because they also realized a problem. Their research on the formation knowledge provided by Tang Yu these days seems to be not very good.

Just like the question Tang Yu asked just now, most of them are not very clear about it.

"Boy Tang, you shouldn't be fooling people just now!" After Master Xu left, Mr. Xingchen observed the formation masters and couldn't help but ask Tang Yu in a voice message.

"Why do I fool people? What I tell the truth is that they are not serious enough and have not learned the real thing, so they dare to say that they have thoroughly studied it. I just want to say a word to them." Tang Yu sent a message to Mr. Xingchen.

Old Master Xingchen didn't dare to speak for a moment because he also felt that there was a kind of majesty like a teacher in Tang Yu's voice transmission this time, so Old Master Xingchen immediately shrank his head, closed his mouth, and watched Tang Yu busy with the final finishing work of the formation alone.

Most of the day passed like this.

The entire formation was finally placed in the corresponding position after Tang Yu's last piece of materials, and after each fulcrum was completely connected, the formation was completely completed.

"boom!"

The moment the completion was completed, a beam of energy that soared into the sky rose from the center of the formation and rushed towards the top of the clouds.

In an instant, a pillar of light that seemed to pierce the entire sky stood in mid-air.

But if you look closely, you will find that there are less obvious differences on both sides of the light column.

It was clearly the same beam of light. The light of the beam was much stronger when it was close to Tang Yu, while the side close to the entrance of the Black Evil Land would be dimmer.

"What's the situation? Why didn't this beam disappear for a long time?" Old Master Xingchen saw that the traces of the formation had disappeared, but the beam still did not disappear because its starting point was above the formation. So after the traces of the formation disappeared, the appearance of this beam seemed very abrupt, which was very easy to arouse people's suspicion.

"well!"

Tang Yu sighed and said helplessly: "This is the problem I was worried about when I first set up the formation. Now it really appears. Old man, take a closer look at the beam of light. Is there a feeling that the light on both sides is actually different?"

"It seems that this is really the case! What's going on?" After observing the beam of light, Old Master Xingchen immediately noticed what Tang Yu said, with a surprised expression on his face and asked.

"Actually, because this beam connects two worlds, if you go to the Black Evil Land, you should also see the existence of this beam, but it is exactly the opposite of what we see now. The light close to them is even more powerful, while those close to us are dimmer." Tang Yu explained.

"What do you mean is that this beam of light actually appears in two worlds?" Old Master Xingchen immediately waited for his eyes and asked in surprise.

"That's right!"

Tang Yu nodded affirmatively and explained: "As for the reason, I don't want to explain it either. You just need to know that this has a lot to do with the two worlds, which is a parallel world."

"Idiot, who asked you to arrange this way? You just need..." Just as Tang Yu explained to Mr. Xingchen, the voice of his little friend suddenly rang in Tang Yu's mind, and he directly scolded Tang Yu, just like Tang Yu scolded Master Xu just now.

However, Tang Yu was not unhappy when he was scolded by his friend, but was very excited because his friend was teaching him how to make this beam disappear and completely hide the entire formation. No one except Tang Yu could find its existence.

However, Tang Yu didn't know that the method taught by the little friend can not only make the beam disappear, but also increase the defense ability of the formation, and even does not need to add any more material. It only needs to change some materials at special locations to the angle or direction.

Listening to the little friend scolding him while teaching him how to arrange such a formation, Tang Yu couldn't help but smile with excitement on his face. Those who didn't know what he had gained might even think that he was a masochist when he saw his appearance.

"I'll try it now!"

Finally, after teaching Tang Yu all the ways to improve, Tang Yu couldn't wait, and said something to the little friend, then rushed into the formation again, becoming busy.

Seeing Tang Yu suddenly disappear, Mr. Xingchen and other cultivators from the ancient temple mountain became nervous.

They were afraid that someone would suddenly attack Tang Yu or capture Tang Yu, which would make them passive. Even if they knew that Tang Yu's formation existed, they would probably have no choice but to use the formation to attack the headless corpse inside.

After all, they don’t know how to bypass the formation and attack the cultivators in the trapped Black Evil Land.

"Don't be impulsive. Maybe Tang Yu entered the formation and improved the formation again. Didn't he say that this formation is not perfect enough?" Just as Mr. Xingchen was hesitating whether to rush into the formation, Ye Yunlan hurriedly stopped him.

"Are you sure?" Old Master Xingchen looked at Ye Yunlan with a very strange expression and asked.
Chapter completed!