The three of them walked back to the tomb door, took off their goggles and oxygen masks, and rested for a while.

More than 4 hours have passed since they entered the tomb, and the power of Chen Ziyang and Umbrella Shishuai's flashlight batteries has been exhausted, so the two of them replaced the old battery and replaced it with a new one.

Each of the three robbers brought a flashlight and two batteries, each of which could last about four hours. In this case, as long as only two flashlights are turned on at the same time, the use time of the flashlight and oxygen cylinder is about 12 hours. In other words, if they haven't harvested in 12 hours, they need to go out to replenish their equipment.

The four hours of walking and nervousness took a lot of physical strength out of all three of them. Especially Yang Lei, who took advantage of the break to eat two compressed biscuits and a bag of mustard in a row, and drank a bottle of water before stopping. Seeing his way of eating, Chen Ziyang screamed in distress, and asked Yang Lei to save some food.

Originally, Yang Lei wanted to hand over the five-shot shotgun to Umbrella Shishuai to hold, once he had been a soldier, his marksmanship must be better than his own. Second, I really can't hold it. But after thinking about it, after all, I don't know if this kid is reliable or not, in case he waits for Zhentao to get something valuable, he will see the wealth again, and take a gun to do both him and Chen Ziyang, then he will really cry and can't find a place. What's more, he almost shot Umbrella Shishuai to death just now, it is inevitable that this kid will not hold a grudge against himself, so he gritted his teeth and insisted, it is more reliable to hold it himself.

The three of them rested for a while, smoked a cigarette again, Chen Ziyang looked at his watch It was already more than 12 o'clock in the evening, so he didn't waste any more time, and let the two of them follow, to verify their guesses, and uncover the secret of the tomb.

The three of them walked through the passage with the "1" engraved on it, and then came to the empty stone room. Seeing that the traces he had wiped with his gloves before were still there, Chen Ziyang was relieved, and the tomb road really didn't have his own long legs, so he returned to the entrance of the passage to find it.

Sometimes a secret is like a piece of paper, piercing this piece of paper, everything becomes clear. Less than three meters away from the passage where the three people entered, another passage stood there in pitch black, as if a cracked mouth was laughing at the three people in front of them.

Seeing all this, the corners of Yang Lei's mouth twitched, "Grandma's, it's really like this, just a few steps away, and our brothers and sisters have turned around and turned around several times." "These two passages seem to be two people back to back, and no matter which direction you look at, you can only see one of them.

Seeing that this scam was so cleverly designed and so simple, Chen Ziyang was sincerely convinced. No wonder they made a mistake before, coming in from the entrance of the stone chamber, going around the stone chamber and then going out, unless someone deliberately waited at the entrance, otherwise 99% of people would go wrong.

Now that Chen Ziyang's idea was verified, the three of them had no extra time to waste, and walked out through the exit passage. After walking out, Chen Ziyang looked back and saw the X mark engraved on the stone wall at the exit, and smiled knowingly.

After changing the X mark to "1 out", Chen Ziyang thought that it would be good to prepare some glow sticks this time, if he used light sticks, he would be able to see the location of the passage from a long distance without looking for it blindly. Just when Chen Ziyang was thinking blindly, Umbrella Shishuai found another passage on the opposite side of the 1st exit passage.

The three of them studied here for a long time at the exit before, and even solved the mystery of the tomb road, but no one even found that there was another passage hidden on the opposite side of the passage 1. None of them were found face-to-face, which shows the secrecy of the design of these passages.

Another round of verification, the opposite side of the 1 out channel is the 2 out of the channel. The 2 exits are on the right side of the tomb, which is also reversed from the position of the entrance passage in the tomb. Both exits are farther away from the tomb gate, so none of the three people saw the entrance when they returned to the tomb gate from here, because the entrance passage could only be seen from the direction of the tomb door.

Now that the secrets of the tomb are solved, all that remains is to spend time exploring. After a quick search by the three men, the entire structure of the tomb was outlined.

Chen Ziyang called the entrance the hole that can be seen from the direction of the tomb door, and the hole that can be seen from the direction facing the tomb door is called the exit. On both sides of the tomb passage, there are 4 entrances and 4 exits. Pairs are set in pairs, and each pair of entrances and exits is connected to a large stone chamber.

In a hidden place at the end of the tomb, there is a fifth entrance, but there is no exit. If it weren't for the previous experience, this entrance would have stood in front of the three of them, and they wouldn't have been able to find it, and the hidden one was really seamless.

Looking at the plan of the tomb road drawn in his hand, Chen Ziyang was secretly glad that he had not rushed forward before, otherwise these passages would disappear and appear in a while, and the three of them would definitely be confused.

The first chamber had only the wall with the frescoes depicted on it, and the second chamber had only the five-sided statue. Chen Ziyang estimated that the function of the first two stone chambers was to prevent the secrets of the tomb from being discovered, so as to scare away the smelly people. And the three of them finally saw something in the last two stone chambers.

In the third chamber there is a large stone platform, on which are placed a lot of iron mechanical objects. Each item resembles the accessories of a very complex clock, and most of these mechanical products are large gears with small gears, which makes people look dazzling, which shows the complexity and precision of these things.

Each product here is unique and has different characteristics. There are animals, houses, clocks, and even human figures. Judging from the placement of these mechanical products, it seems that this stone room is an exhibition hall where these mechanical products are being exhibited.

Without exception, these iron machines are covered with crimson rust. Yang Lei picked up a gadget casually, this thing looked like a mechanical bird, just when Yang Lei wanted to see if the mechanical bird could fly, the bird's tail in his hand suddenly broke, and the whole mechanical bird's body fell on the stone platform, just smashed on a waterwheel model-like thing. As the mechanical bird fell, in the blink of an eye, both artworks turned into a pile of rust.

After checking that there were no hidden compartments under the stone platform, Chen Ziyang told Yang Lei and Umbrella Shishuai not to touch things to prevent them from touching the mechanism or damaging the artworks. These things are exquisite, and even the thick rust on the surface can't hide the aura on these products. It's a pity that these things are now seriously decayed, and I'm afraid they can't be repaired anymore, so it's better not to destroy them. Chen Ziyang led the two out of the stone room.

The crowd came to the fourth stone chamber. In the fourth stone chamber, Chen Ziyang finally found the reason why the tomb was damp and the iron tools were rusty.