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  Liao Dongfeng also heard the commotion and quickly jumped down from the stone, but as soon as he landed, the boulder suddenly started moving on its own. Such a massive stone couldn't be stopped by human force, so he instinctively looked in Haichen's direction, just about to shout loudly, only to find that Haichen was nowhere to be seen.

  The boulder rolled down the slope, and Liao Dongfeng saw a pit with a diameter of about 3 meters on the slope. As he watched the boulder roll into the pit, he secretly exclaimed: "Oh no! Hai Chen won't fall into the pit, will she? This boulder is meant to block her way!"

  Liao Dongfeng didn't want to think about it anymore, if Hai Chen really fell into the hole and the giant stone was pressed down again, his life would probably be over.

  However, the process did not go as smoothly as the designer had designed. It can be said that Hai Chen's life was not destined to end. The giant stone, due to long-term exposure to wind and rain, was no longer solid and was about to roll into the pit when it suddenly split into more than a dozen pieces. Several smaller ones fell into the deep pit, but strangely, there was no sound of them hitting the ground.

  Liao Dongfeng also arrived at the edge of the big pit, and saw that the pit was bottomless. At this time, it was still emitting hot air. He looked around in a circle, confirmed that he had not found Hai Chen's trace, and then shouted towards the pit: "Hai Chen, are you down there?"

  The deep pit came with waves of echoes, but didn't hear Hai Chen's response. Liao Dongfeng was anxious and carefully approached the edge of the pit to look inside. Although it was a sunny day, only 20 meters below could be illuminated, and nothing could be seen below that. The walls around the pit were not earthy, but white rock, and they were quite flat, with signs of artificial polishing. He quickly returned to Duan Lao's location and reported the situation, then brought others to rescue Hai Chen.

  Feng Letian and Qin Liao fixed the long rope, seeing Liao Dongfeng about to climb into the pit, the two of them shouted in unison: "Be careful!"

  A casual sentence made Liao Dongfeng feel warm in his heart, and he saw him smile slightly, asking casually as he crawled into the pit: "Is this rope long enough?"

  "200 meters, climb yours." Peng Jianjun said coldly from behind. At this time, Liao Dongfeng turned his head and stared at him, and Peng Jianjun immediately urged: "Hurry up! Otherwise, our beloved Dr. Hai will leave us forever. Less nonsense, more action, okay?"

  Liao Dongfeng listened and looked at the other three people with a gentle gaze, then slid into the depths of the pit without looking back.

  All the way down, Liao Dongfeng only felt that the temperature in the pit was constantly rising, until it was no different from the outside.

  It shouldn't be like this, because in the past when we were in school, the school responded to the call of "dig deep holes and store more grain", mobilizing all teachers and students to dig a cellar. The cellar was only about 20 meters away from the ground, but the temperature inside the cellar differed from the outside by nearly 15 degrees.

  But at the moment, the opening above his head was only as big as a pot lid, and the depth had reached nearly 100 meters, yet he didn't feel cold at all, instead it felt warm. Why is that? Is there geothermal activity deep within the cave? Or is there a large fire present?

  As he thought about it, the road under his feet suddenly changed direction, after a gentle curve and deceleration, the cave began to extend horizontally, Liao Dongfeng took out the wolf eye flashlight and opened it, a straight beam of light shot into the unknown depths, it seemed that he still had a long way to go.

  Suddenly, I stepped on something soft under my feet. When I looked down, it was a roll of gauze. It must have fallen out of Haichen's medical bag when he fell. At this moment, he shouted loudly towards the front: "Haichen, are you still breathing?"

  The sound traveled along the tunnel and went deep, but for a long time, there was no response from Hai Chen. Liao Dongfeng just wanted to move forward when suddenly there was a loud noise behind him, followed by Peng Jianjun's curses: "Damn it, I almost got killed, you ghost place."

  Before long, Feng Le Tian and Qin Liao also slid down. The four of them carefully observed their surroundings. At this time, Liao Dong Feng discovered that there were many holes carved into the smooth wall. He didn't know what these holes meant at the moment. Then, everyone discussed and decided to have Liao Dong Feng and Feng Le Tian lead the way in front, while Peng Jian Jun and Qin Liao brought up the rear, before they all ventured deeper together.

  The cave was still very dark, and the flashlight's beam was too concentrated, so Liao Dongfeng suggested that everyone talk while walking to avoid anyone taking a wrong turn, which would be troublesome later.

  "Comrade Captain, what do you think this pit is used for?" Liao Dongfeng asked while shining his flashlight on the road under his feet.

  "It's hard to say, but I think that since it was man-made, it must be related to the Mausoleum of Qin Shi Huang. At present, I have a bold conjecture: in ancient times, underground construction would always leave ventilation channels, on the one hand to prevent workers from becoming lethargic due to lack of oxygen, and on the other hand to give them a sense of security. At least the ventilation channel connects to the outside world, so the craftsmen know they can still get out. However, with such a long tunnel, without external help, it's impossible for them to get out."

  After listening to Feng Le Tian's words, Liao Dongfeng smiled slightly and asked: "Want to hear my opinion?"

  "Just say it if it's not nonsense."

  "I agree with your ventilation theory, but I think this cave is more than just for ventilation. The space here is huge and can hold at least thousands of people, so I feel that this should be a resting place for artisans or soldiers. Earlier, I saw many holes on the wall, now it seems that those holes are used to put lighting devices." After finishing speaking, he shone his flashlight on the wall and pointed to a hole for Feng Le Tian to see.

  Feng Le Tian slowly approached the wall, reached out to touch the inside of the hole, then lowered his head and asked: "It seems that you are also quite familiar with the tomb, and your eyesight is indeed sharp. No wonder the old man said before that he couldn't do without you!"

  "Did Old Master say this?" Liao Dongfeng asked, turning his head back.

  Before Feng Le Tian could speak, Qin Liao behind him said loudly: "I've said it before, old man said that without you we can't go anywhere. But I'm also curious, is the old man able to predict or calculate? Did he calculate our return here in advance?"

  "May I ask a question?"

  "Don't talk nonsense." Feng Le Tian's tone was still stiff.

  "What did the old man used to do? Are you so familiar with him that you know his secrets?"

  "We've been learning from Old Master for over a decade, what do you think?" Feng Le Tian's tone was still stiff, apparently this was a sensitive topic.

  "I'm not talking nonsense, am I? You guys don't look for topics either." Liao Dongfeng said, and strode forward with big steps.

  Qin followed up at this time, and said to Feng Le Tian in a low voice: "Sister, I think Dongzi is okay, he's much better than Hai Chen, right? Besides, we're all from the capital, and our relationship should be closer in a foreign land. No need to be so confrontational?"

  It just so happened that Peng Jianjun was also passing by them at this time, he didn't look at Feng Letian and Qin, but just casually said: "Class brothers actually have a rift, Chairman Mao would be heartbroken if he knew."

  Feng Le Tian didn't say anything after listening, and he walked forward with a flick of his sleeve. Qin Liao was a bit stunned, he didn't know what was going on with his older sister, and in terms of their relationship, they were still close recently, so there was no need to offend her at all. He shrugged and quickly followed up.

  After walking for about ten minutes, the four of them finally reached the end of the cave, or rather, it was more like a dead end.

  The passage was cut off, and in front of him was another seemingly bottomless abyss, probably caused by the earthquake's destruction. It's no wonder that nature's destructive power is boundless! Liao Dongfeng shone his flashlight ahead and found that there was still a large space in front of him. More importantly, he felt that the temperature around him had already risen to a point where it could be clearly felt, which meant it must have been above 35 degrees Celsius.

  When Feng Le Tian and Qin Liao were still wandering in despair, Liao Dongfeng and Peng Jianjun had already started searching for usable tools from their backpacks. The two didn't speak, only communicating with hand gestures, which also made the other two understand what tacit understanding was.

  Found the tool, Liao Dongfeng walked up to the wall and hit it hard with a rock hammer. Peng Jianjun also shone his flashlight on the other side of the abyss at this time, and the light fell on a hole in the wall. He then turned around and exchanged eye contact with Liao Dongfeng. After that, the two stood together and gestured for half a day before taking action immediately.

  Feng Le Tian didn't know what they were up to either, and he didn't want to ask. It seemed that she was preoccupied with something on her mind. Qin Lie also paid attention to Big Sister's expression, and after confirming that she didn't want to help, he quickly ran to Peng Jian Jun's side and said: "Junzi, I'm here to help."

  "I'm deeply grateful." Peng Jianjun said with a smile.

  At this time, Liao Dongfeng found the right place to start, turned his head and said to Peng Jianjun: "Jianjun, crouch down, the place where we are going to nail must be a little higher, otherwise it will not be able to swing over. Also, you are heavier, so let me take care of the difficult task? Don't compete with me."

  Peng Jianjun smiled slightly, then his face suddenly turned serious again and asked: "A cripple, how do you think he got past?"

  "He may not be gone yet. Never mind so much, squat down."

  Peng Jianjun crouched on the ground, Liao Dongfeng stepped on his shoulder, Qin Le handed over the tools, and soon the fixed point was nailed to the rock wall, and the rope was tied. Peng Jianjun pulled hard and nodded at Liao Dongfeng after confirming. At this time, Liao Dongfeng began to instruct: "I'll try first, if I don't succeed, you two will return by the original route and find another way out."

  After finishing, he grasped the rope tightly, wrapped it around his wrist a few times to secure it, and then took a deep breath. Just as Liao Dongfeng was about to take action, Feng Letian finally couldn't help but shout: "Be careful!"

  Liao Dongfeng turned around and made a receiving gesture, then suddenly pounced forward. Peng Jianjun also quickly shone his flashlight over to indicate the location of the hole in the wall for Liao Dongfeng. Liao Dongfeng was like a flying spirit, and with one swift motion, he grasped the hole with his hands and climbed up with difficulty. After sitting on the ground, he carefully thought back to that instant.

  The abyss of this head, Feng Le Tian was also overjoyed. Originally, she thought that only Tǔ Gǒu Zi ān Yuè Mín could do it, but unexpectedly Liào Dōng Fēng also did it. After the surprise, she asked Péng Jiàn Jūn: "Is this kid also practicing? I think his skills are not bad!"

  Peng Jianjun tidied up the tools on the ground, and replied without lifting his head: "Captain, you don't know much! Didn't that kid discover this passage too? I think you should talk to him more often."

  "Old Master Liao was mentioned by Old Master before, he said that Old Master Liao is all-powerful and professional in everything, his knowledge is very profound, and his courage is also great, unfortunately, he also left his life in the cave of Pamir."

  Peng Jianjun was stunned after hearing the news, and immediately defended: "What? Lao Lai has lost his life? Don't joke around, I've also met Lao Lai before, how is that possible?"

  Peng Jianjun's voice was relatively loud, and even Liao Dongfeng on the opposite side of the valley heard it clearly. When he heard Feng Le Tian mention his grandfather, he immediately shouted: "Stop messing around, come over and talk about it later. Comrade Captain first, Junzi you push her a bit, Qin Li'er next, and Junzi you come last."

  This sentence made Feng Le Tian's captain identity completely nominal, but others did not object because Liao Dongfeng's skills were indeed good.

  After safely sending Feng Le Tian and Qin Liao over the chasm, Peng Jian Jun began to prepare to also cross over. At this time, he lowered his head to take a glance at the dark depths below, suddenly feeling a bit dizzy. Afterwards, he loudly asked those on the opposite side: "When I'm crossing over, you guys must definitely catch me, okay? This old man doesn't want to die here!"

  Just as he was about to rush over, he suddenly heard a man's **, and this voice came from the depths of the abyss.