The entrance to the tomb is at a depth of less than ten meters, so the tunnel dug by Zhang Housheng is slope-shaped. The three of them stooped to the door of the tomb, and the space here was much larger. It was more than enough for three people to stand side by side. On the right side of the entrance to the tomb, there is a tunnel that leads directly to the farmland behind Zhang Housheng¡¯s house. The entrance to the tunnel was carefully concealed by him, so that no one would find it. The function of this tunnel is not only for ventilation, but also for escaping in case of emergency. When they arrived at the entrance of the tomb, the third child smiled and said to Zhang Housheng: "Brother, let me go down first this time. If something happens to me, I hope you can help me take care of my mother and children!" Zhang Housheng patted him. On his shoulder, he solemnly promised: "Don't worry, Third Brother, I have food to eat, and I will definitely not let them go hungry!" Third Brother nodded, and then, with the help of Zhang Housheng and others, tied one end of the rope to himself On his waist, he then put on a gas mask, and using the light of the miner's lamp, he climbed into the tomb passage step by step along the ladder. After a while, his figure disappeared. At this time, Zhang Housheng and the fourth child were in a very nervous mood. After the previous two accidents, they were afraid that something might happen to the third child again. If something unexpected happened again, even Zhang Housheng, who wanted to empty out the tomb, would definitely retreat in his heart. After more than ten minutes, the rope stopped moving again. This made the two people feel nervous and quickly pulled the rope. Fortunately for them, the third child inside immediately gave them a response. It seemed that there was no problem. What happened? About a quarter of an hour later, the third child crawled out of the tunnel. Zhang Housheng quickly asked: "How is the situation inside?" The third child said excitedly: "It takes about eight or nine minutes to crawl outside. The outer room is very spacious, and you can see the door from the passage. " Hearing the third child said this made the other two very happy, but Zhang Housheng was overjoyed. He immediately reacted and asked: "What about the mechanism? What happened to Lao Jiu before? Did he encounter a sling?" Hearing this, Lao San said sadly: "It is indeed a sling. Lao Jiu is unlucky, right? , the other iron ropes and slings were useless, and the stones fell to the ground. He should have thought that the mechanisms had failed, but" Zhang Housheng and Lao Si heard that this was what happened. He sighed and shook his head slightly. This tomb robbing is a job that involves losing your head. Not only is it possible to lose your head if you are caught, but if you are not careful, you will fall into the trap of the trap in the tomb, and you will also lose your head. After sighing. Zhang Housheng immediately asked: "Lao San, what about other institutions? Have you noticed?" Lao San hesitated for a while and said: "I saw that from the entrance of the tomb to the gate, there are iron ropes and stone hangings. "Hey, there are probably no mechanisms on the ground anymore." Hearing this, Zhang Housheng asked, "You didn't go in to take a look?" The third child replied, "The ground is full of rocks. I'm afraid it will take me a while to get in." Just come out first.¡± Zhang Housheng nodded, thought for a while, and said, ¡°Lao Si, Lao San and I will go in and take a look. How about you meet us here?¡± Lao Si quickly said it¡¯s okay, and then Zhang Housheng and Lao San went down the tomb passage together. Zhang Housheng followed Lao San and slowly crawled towards the end of the tomb passage. As he climbed, he looked around at the situation. The material used to build the tomb passage was stone, which was nothing unusual. There was a dark red trace on the ground. Needless to say, this was the blood stain left by Lao Jiu. ¡°As the third child had estimated before, after eight or nine minutes, the two of them climbed to the end of the tomb passage. Come to the outer room. Zhang Housheng suddenly felt that his eyes suddenly opened up. He stood up and moved around for a while, then he began to observe his surroundings carefully. The walls here are also made of stone. And from their position to the ground in front of the gate, it was indeed all stones as Lao Si said, so there was no need to worry about encountering the traps on the ground again. And a stone at the door was covered with dark blood stains. Needless to say, this was what Lao Jiu had left behind. The third child signaled to Zhang Housheng and started heading towards the gate. He climbed over the boulders cautiously, but nothing unexpected happened along the way, allowing him to reach the gate of the ancient tomb safely. The door in front of Lao San is also made of stone, and it has a split structure. Maybe it was very tight at first, but after more than two thousand years of changes, the door now has a gap of three to four millimeters. The third child pushed the door in front of him, but it didn't move. Then he pushed with all his strength, but it still remained the same. This made him a little strange, so he checked the door carefully, and thenThere was a surprised expression on his face. "What's wrong?" Zhang Housheng saw that the third child arrived at the door of the tomb safely and confirmed that it was safe. He took advantage of the third child to check the door and rushed over. The third child replied with a wry smile: "This door is actually made of tapstone!" Tapstone is an anti-theft measure in ancient tombs. There are generally two situations. The most common type of tapstone used is stone strips. The principle is as follows. Craftsmen first make the upper and lower ends of the stone door shaft into spherical shapes, and then carve out a surface protrusion in the same part of the two stone doors at the same level as the door seam. The groove is then cut out on the stone floor not far from the central axis of the door, with a shallow front and a deep groove at the back. Before closing the stone door, people first placed the stone bar with a considerable width in the groove on the ground, and slowly tilted it forward so that it contacted the stone door. When people withdrew from the underground palace, the stone bar automatically pushed the stone door closed with the help of its own tilt pressure and the "ball" effect at the end of the door shaft, until its top fell into the convex grooves of the stone doors on both sides. At this time, anyone who wants to push the stone door open from the outside can only be wishful thinking. The second type of natural stone is stone balls. They were originally dug behind the door and put the stone balls in it. The difference is that there is a horizontal groove from the position where the stone ball is placed behind the door to the final position. There is one on each side of the horizontal groove. There is a pit at the starting point and the end point, and there is a certain inclination angle. The pit at the end point is lower. Since there was a door blocking it at first, the stone ball would not move. When the door is gradually closed, the stone ball will roll down the horizontal groove and eventually fall into the pit behind the door, blocking the door. For a double door, there is usually a stone ball and a horizontal groove on each side. When the door is finally closed, there is a stone ball blocking the back of the two doors. Having said this, everyone must understand that it is more difficult to open the second type of tap stone than the first one. If it is a stone bar, the method of cracking it is quite simple. First, take a relatively strong steel bar, then bend one end into a large hook, and then insert the steel bar along the door gap. After inserting the steel bar, turn it sideways so that the hook can resist the large stone bar, and then push hard to make the stone bar stand up, so that the tap stone will not resist the door and the door will open naturally. As for the stone balls, it's okay if it's a single stone ball. You only need to use one end of the thin steel wire to make a trap slightly larger than the stone ball, and extend the trap through the gap in the middle of the stone door into the door and trap the stone ball. Hold the other end of the thin steel wire in your hand, pull it up, lift the stone ball up and away from the stone trough, and push the stone door open at the same time. But there are stone balls on both sides, which is troublesome, because the position of the stone balls cannot be seen through the crack of the door, and it is not that easy to trap the stone balls. Zhang Housheng was stunned for a moment when he heard this. Although the principle of the jade stone was simple, he really didn't expect that this kind of ancient tomb from the pre-Qin period would actually have such a device. When he came to his senses, he quickly asked He asked: "Which kind of natural stone? Is it a stone ball or a stone strip?" "Looking from the crack in the door, it should be a stone strip." When Zhang Housheng heard that it was a stone strip, he immediately breathed a sigh of relief and opened the first natural stone. Come on, he just needs to get a steel bar that meets the requirements. "Let's go back first!" The third child hesitated after hearing this and said, "Brother, how about we blow it up! My heart is beating so hard, as if something is about to happen." Zhang Housheng Frowning, he said: "Third brother, I'm not talking about you. If something is going to happen, then we should be calmer. If, like you said, we use explosives to blow the door open, if we don't tell you, the treasure inside may be destroyed. If it's broken by shock or smacking, wouldn't it be worse if the sound spreads and alarms other people?" At this point, he patted Lao San on the shoulder and said, "Lao San, I also know what you are doing. For our safety, but Youdao is in a hurry and can't eat hot tofu. Tomorrow I will go to blacksmith Wu in the town to make a tool. Tomorrow night will be the time for us to harvest. We are not in a hurry at this time. Don't you think so? ?¡± The third child felt that Zhang Housheng¡¯s words made sense, so he said, ¡°Well, brother, I listen to you.¡± Zhang Housheng smiled at him, and then the two returned to the ground along the original path. ¡¡¡¡¡¡¡¡¡¡ Because he was always thinking about Chang Manbei, Chu Chen didn¡¯t get much sleep all night. Fortunately, after this power upgrade, his physical fitness improved again. Many people will not feel any discomfort even if they don't sleep for a whole night. Speaking of this power upgrade, apart from the Lingbao Eye, there are no other surprises. The improvement in physical fitness is not as obvious as the first time, and it does not allow his Tai Chi to achieve a breakthrough. On Sunday, this made him slightly disappointed. Of course, Chu Chen was not that dissatisfied, and his disappointment was soon forgotten by him. This upgrade cannot reach the Great Zhoutian. It will definitely be possible next time. However, there will be no new abilities in the next upgrade. However, the upgrade does not require any tasks like the previous two times. You can upgrade as long as you have accumulated enough progress.