Moon Shadow Fuxian nodded: "Because it is a tomb, it will definitely attract tomb robbers, and these four words are left for tomb robbers." After the tombs of ancient princes and generals were completed, in order to prevent the location of the tombs and the secrets contained in them from leaking out, all the craftsmen who built the tombs would be killed, which is why there are so many bones here. ”

"So many craftsmen?" Wu Zhiyuan looked around and said in surprise, "With so many craftsmen to build a tomb, wouldn't the scale of this tomb be surprisingly large?" ”

"Not necessarily, sometimes in order to rush the work, it is also possible to send additional manpower, as long as you get out of this pit, you can naturally peek into the heavens outside the cave." Moon Shadow Fuxian moved his body to the side with difficulty, and pointed to the big gap under the words "Heavenly Machine Outside the Wall", Wu Zhiyuan lay on the ground and looked at it, although the gap was large, it could only allow one person to pass through.

"I've seen this gap, the whole cave wall should be a huge rock, the bottom is buried in the soil, but it happens that the thickness of the bottom is relatively weak, only the craftsman who built the mausoleum knows this, so he left a handwriting here." Moon Shadow Fuxian explained on the side.

"With this hammer?" Wu Zhiyuan held the rusty hammer, and his eyes showed incredulity.

Moon Shadow Fuxian nodded firmly.

Wu Zhiyuan leaned over and was about to get into the gap, when he suddenly raised his head and asked suspiciously: "If the stone wall in this gap is really very weak, then why didn't the original craftsmen escape from here?" ”

"These craftsmen were killed when they were discarded, so the pit was full of dead bodies at that time, and there may have been a person who had a breath of breath at that time, so these four words were carved, and after the words were completed, they must have died." Moon Shadow Fuxian speculated.

Wu Zhiyuan thought about it and felt that it was reasonable, so he prostrated himself suspiciously, and drilled into the gap close to the ground, the space in the gap was extremely narrow, he could barely pick up the hammer horizontally in a small range and hit the stone wall inside, under a blow, there was a muffled sound, this sound was obviously different from the hammer hitting the thick stone, Wu Zhiyuan was overjoyed, and picked up the hammer and knocked it again.

I don't know how many times I smashed it, with the hammer of the hammer, the stone wall close to the ground fell a piece of stone, and then, with a "poof" sound, a faint light penetrated in, and the stone wall was really smashed through.

Wu Zhiyuan was overjoyed, he was full of energy, and it was another smashing, and soon, the mouth that was smashed out became bigger and bigger, and he could already allow one person to pass, so he withdrew and excitedly hugged the shoulders of the Moon Shadow Fuxian and smiled: "It's through!" Let's go! ”

As he spoke, Wu Zhiyuan pulled the Moon Shadow Fuxian and was about to drill into the gap, but suddenly found that the latter was sitting motionless in place, and seemed to have no intention of going.

"Moon Shadow, what's wrong with you, let's go." Wu Zhiyuan looked at the Moon Shadow Fuxian strangely.

"Brother Zhiyuan, I can't leave, you go quickly, find the Blood Shadow Demon Knife to cut off this steel ring and chain, I'll wait for you." Moon Shadow Fuxian looked down at the chains on his hands and feet, the other ends of which were cast in the stone wall, unusually strong.

Moon Shadow Fuxian only saw that Wu Zhiyuan didn't take the Blood Shadow Demon Knife with him, thinking that it was lost outside the cave, but how did she know that the Blood Shadow Demon Knife was already in the wolf den of the White Wolf Valley hundreds of miles away at this time.

Wu Zhiyuan was so anxious that he picked up the hammer and grabbed one of the chains and put it on the bluestone, slammed the hammer, only to hear the sound of "dang", the chain was unscathed, but the hammer was suddenly stressed, and the rust pieces on the appearance fell off.

Wu Zhiyuan didn't believe in evil, picked up the hammer and smashed it continuously, only to smash it until he was exhausted and panting before he withdrew his hand, only to find that the chain was not affected in any way except for a slight heat.

"It's useless." Moon Shadow Fuxian smiled bitterly, and wanted to come forward to stop Wu Zhiyuan, but she couldn't move her body because the steel ring on her neck was too heavy, and as soon as she finished speaking, she suddenly remembered something, and hurriedly said, "By the way, Brother Zhiyuan, when those people transferred me, I vaguely felt that they untied the steel ring around my neck, maybe the steel ring itself is a lock, and they have the key to this lock." ”

Wu Zhiyuan was shocked when he heard this, and secretly said in his heart Why didn't I think of this, there is such a steel ring left in the cave of the mountain temple, which means that they did not take this kind of steel ring away, and when transferring the Moon Shadow Fu Immortal, the steel ring will definitely be opened, will this method of opening be as Moon Shadow Fu Xian said, it is done with a key?

Thinking about it, Wu Zhiyuan grabbed the collar on the neck of the Moon Shadow Fuxian and examined it carefully, and sure enough, he found a slender hole at the bottom of the collar, which was very much like a keyhole inserted.

"Do you know where these people are?" Wu Zhiyuan asked after a moment of silence.

"I don't know anything, I don't know anything about them, they've been keeping me here for a few days, and they haven't even brought me a bite of food these days, and it's strange that I don't feel hungry." Moon Shadow Fu Immortal replied inexplicably.

Wu Zhiyuan heard Moon Shadow Fuxian's words, and thought to himself that her lack of hunger might have something to do with the Gu worms in her belly, but this was not the time to discuss this, so it was inconvenient to point it out. Wu Zhiyuan stretched out his hand and hugged the Moon Shadow Fuxian, and was silent for a long time, after a while, he finally turned his heart sideways, said "wait for me", and got into the big gap under the stone wall.

The light outside the stone wall is actually not bright, but it is much brighter than inside the pit, and in the dim darkness, he can barely see the general outline of the scene within ten meters in front of him, Wu Zhiyuan looked around and found that he was at the end of a corridor-like passage, and behind him was the stone wall of the pit that he had just climbed out.

If this passage is really a mausoleum as Moon Shadow Fuxian said, then this passage is very likely to be part of the mausoleum, then the pit where the bones of the dead were piled up just now is also very likely to be a burial pit.

While thinking, Wu Zhiyuan approached the stone wall on the right side of the passage, and slowly walked along the wall, the wall in the passage was like a blue brick building, and I don't know how many years have passed, but the surface of the green bricks is extremely dry. If according to common sense, the yin in the mausoleum is heavier, and it is built underground, the air is humid, and the surface of the wall should return to moisture and grow moss, but the green bricks on this wall are abnormally dry, is there a vent in this passage?

After walking more than ten meters along the wall, the direction of the passage suddenly turned to the right, and Wu Zhiyuan saw that there was no other fork, so he could only follow the direction of the passage. Both sides of the passage are made of green bricks, there is no trick, and I walked about ten meters away, and the direction of the passage turned again, and I didn't know where to turn.

Wu Zhiyuan didn't think much about it when he saw this, and continued to walk along the passage, but he didn't expect that the direction had changed many times in a row, and the passage seemed to be incomplete, and it was still the same as if it was going around.