Yan Shenglin covered Gu Yichen behind him without hesitation.

The footsteps were getting closer and closer, and the visitor seemed to recognize them as they were right in front of them.

Gu Yichen held his breath and looked straight ahead without a moment, waiting for the other party to appear, he had to take action to force the future person to use force.

The atmosphere is about to break out.

Gu Yichen frowned and listened to the sound of footsteps that were so close that he couldn't calm down.

"I said to you, what are you doing when you run so fast?" The person who came loosened his collar panting.

Yan Shenglin put down the gun in his hand, stared at the uninvited guy expressionlessly, and walked straight forward, "Who allows you to follow me?"

Cheng Hongxue was amused and laughed, "Do you think I would like to come to this dark place? Isn't it the boss's death order? Do I dare to disobey?"

Yan Shenglin pulled him by the arm and pulled him back a few steps, with a solemn tone, "What does the boss know?"

Cheng Hongxue's mouth raised lightly, and his face was filled with a joking smile of success. He raised his eyebrows and slowed down his tone, "It depends on whether I want to explain it truthfully."

After saying that, Yan Shenglin didn't think about it at all, and quickly stopped the other party's throat with one move.

Cheng Hongxue widened his eyes and said in surprise, "What are you going to do to me?"

Yan Shenglin used a little force, suppressed the other person's throat with two fingers, and blued the other person's face bit by bit.

Cheng Hongxue patted his shoulder and signaled that he would admit defeat.

Yan Shenglin let go of his restraint, "If you want to retire early, I can fulfill your desire to be greedy for life and fear death."

Cheng Hongxue covered his throat and gasped, "Brother, we are brothers who break the bones and are connected to the tendons."

"Shut up."

Cheng Hongxue raised his mouth aggrievedly, "I am your devoted and crazy fan."

"You didn't meet me today." Yan Shenglin turned around and continued to walk forward.

Cheng Hongxue gently pulled Gu Yichen, who was silent next to him, deliberately lowered his voice, and said, "What are you trying to do when you come here mysteriously?"

Gu Yichen asked without answering, "Guess what is here?"

"I heard some gossip outside. Is this a cemetery?"

Gu Yichen nodded indifferently.

Cheng Hongxue seemed to understand and hurriedly said, "You are here to dig treasure?"

"You're talking a little too much." Yan Shenglin reminded.

Cheng Hongxue tsk, "I am a good young man with both good character and academic performance. I will never be with you."

Yan Shenglin pulled the other party's collar at a lightning speed and pulled him directly in front, "You come and lead the way."

Cheng Hongxue was stunned, "I will lead the way? What will I lead?"

"Shut up."

Cheng Hongxue raised his mouth and felt even more aggrieved, "You can't be more polite to others? Don't forget who brought you back from the battlefield. I am your savior after all."

"You mean to settle old accounts with me?"

"Hahaha, you're so good at joking, I'm just telling jokes, don't take it seriously." Cheng Hongxue held up the flashlight, "The smell here is so strange."

"The gas produced after the corpse decay is accumulated underground for a long time, and after release, it oxidizes." Gu Yichen explained.

"Really?" Cheng Hongxue looked like he suddenly realized, "I am a high school student, but my knowledge is different."

"I'm talking nonsense." Gu Yichen poured a basin of cold water.

Cheng Hongxue's mouth twitched.

"There are no corpses here, but it may also be the reason for the mechanism set up by the owner of the tomb."

"There are mechanisms?" Cheng Hongxue walked closer to the wall.

Gu Yichen glanced at him and said carelessly, "From ancient times to the present, in order to prevent stolen from later generations, the owners of the cemetery cleverly used some mechanisms when closing the tomb. Common ones include water storage, sand accumulation, fire burrowing, poisonous smoke, crossbows, etc.."

Cheng Hongxue scratched his already undeveloped head, suddenly understood something, and hurriedly covered his mouth, "Is this poisonous gas?"

Gu Yichen walked up to him and touched the soil on the wall. "Storage water in the tomb. Once the tomb robbers enter, they will drown and die. However, this anti-theft method is a method of dying together, directly destroying the entire tomb. Not to mention that hundreds of years have passed, the moisture in the tomb has long been absorbed by the soil."

"Where is the poisonous gas?" Cheng Hongxue asked without shame, and he could hear it with relish.

Gu Yichen said again, "The poisonous gas tomb is a mercury tomb. A mercury pool is set up in the tomb. When the mercury evaporates the poisonous gas to a certain concentration, it can kill the tomb robbers without showing any expression. However, mercury tombs are rare. After all, mercury was a rare object in ancient times. The most common one is the fire, commonly known as the fire pit tomb."

"Does combustible gas mean?" Yan Shenglin asked.

Gu Yichen refused to comment, "Even if it is biogas, open fires cannot be seen in tomb robbers."

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Chapter completed!