"Then what kind of attribute can restrain 'earth'?" Ling Xuezhi clasped his head and said.

"It seems to be 'wood'." Deng Yuhao said.

"But you can't just take a piece of wood, can you?" Ling Xuezhi said.

Li Tao threw the book in his hand to Deng Yuhao and said, "You still go to find the person who gave you the book."

Deng Yuhao then remembered the mysterious old man.

It was already eight o'clock in the evening when I got to eat something and went back to the library. Deng Yuhao trotted all the way to the archives on the sixth floor. This time, the archives were brightly lit and full of people, mostly teachers and staff from the school. They seem to be moving those files away, so it's not lively.

"Teacher, what are you doing here?" Deng Yuhao asked a staff member beside him.

"The school is going to reorganize the files, what are you doing here with one of your students?" The staff asked.

"I'm here for an old gentleman who seems to be the caretaker here." Deng Yuhao said.

"You mean that old man in his sixties, he's going back early." The man said.

"Go back, where are you going?" Deng Yuhao asked.

"Of course, it's to retire and go back to my hometown." The staff member said.

\"I'm back home." Deng Yuhao felt that he didn't seem to be very lucky. At this time, a teacher-like person next to him came over and said, "Are you Deng Yuhao?"

"How do you know me?" Deng Yuhao looked at him and said.

The man smiled and said: "It was Lao Wu who entrusted me two days ago, and he said that a student named Deng Yuhao would come to him in the next few days, and when he came, let me hand him something over." With that, he took out a black paper bag from his body.

Deng Yuhao accepted it, thanked him, and walked downstairs.

When I opened the paper bag, I took out a letter first, and the content was roughly like this.

Young man, I know you're coming to me again, and it must have something to do with Building Nine. But once again, you and a few of your troubled friends had better not take care of it, because those things will only make you fall deeper and deeper, and even if you can cope with the problems for a while, in the end you will not be able to find out the truth of the facts, and it will bring you ruin. So, the best thing for you to do is to get out of this place as soon as possible.

The old man also knew that you would not do it, and wanted to let you live and die, but I had no choice but to give you some advice. In my bag for you, there is a thousand-year-old piece of wood, and I will not tell you the origin of it, but you only need to take it out when your life is at stake.

This thing can protect you, but it can't bring much harm to that thing, so the old man still advises you to stay away.

After reading the letter, Deng Yuhao took out the contents of his bag again. After looking at it for a long time, I didn't see anything special about this red lacquered wooden board. But in desperation, I took it back to the bedroom.

"Brother Hao, this is the magic weapon that the master gave you." Ling Xuezhi took the wooden board and said.

"yes, it's a thousand-year-old wood." Deng Yuhao said. Although I don't really value this thing, after all, I got it back by myself, so I can't say too much.

"Brother Tao, do we really want to use this thing to deal with Cheng Feng?" Ling Xuezhi asked Li Tao.

"Now we don't have any weapons, but at least this plank still has a doorway, you think, we are looking for something related to wood, the old man is so coincidental to prepare it for us, at least it also shows that he is an unknown prophet, then such a master will give us, naturally it will not be bad." Li Tao said optimistically.

"I don't think so." Ling Xuezhi still doesn't look down on such things. And he said, "Let's not talk about this for now, I have a way to uncover the secret of that iron box."

"You're not trying to smash it open, I don't think it's going to lead to anything." Deng Yuhao said.

"Look at what you said, I'm that stupid?" Ling Xuezhi said.

Li Tao and Deng Yuhao immediately cast their eyes in agreement.

"Okay, this time, I'll prove my wisdom to you." After Ling Xuezhi finished speaking, he immediately took out the iron box from the drawer.

"Hey, Xuezhi, don't mess around." Li Tao was afraid that he would ruin important clues.

I saw Ling Xuezhi pick up the iron box and put it on the ground, holding both sides with both hands, and turned the box vigorously, as if he was still counting the number of circles in his mouth. Just as he was counting eighty-one out loud, he suddenly raised his right hand and pressed it down hard, just in the middle of the iron box. Deng Yuhao and Li Tao were waiting for this to happen, and sure enough.

Nothing happened.

Several minutes passed, and Ling Xuezhi still maintained that posture without moving.

"Okay, Xuezhi, we don't blame you, you get up." Deng Yuhao patted him and said.

However, Ling Xuezhi was like a demon, and he still didn't move.

More than ten minutes later, Deng Yuhao suddenly heard a clicking sound from the iron box.

"Alright." Ling Xuezhi got up at this time, and his hands were like a master in the TV, covering his head from the dantian.

Li Tao picked up the iron box and looked at it, and there was a thin line around it, which was the crack of the iron box.

"Hey, it just cost me too much 'chakra', now I'm going to rest, and I'll take care of the rest." After speaking, Ling Xuezhi brushed his sleeves and left.

"Hey, where are you going?" Deng Yuhao was full of questions.

"Damn, I just squatted numb, can I go out for a walk?" Ling Xuezhi's voice came from outside the house.