It was a dark, unlit passageway, like an abandoned mine tunnel with a regular rectangular entrance.

Lu Xiao carefully observed the area around the entrance and didn't find any mechanism, so Zhang Tingting followed behind him, and the two of them walked cautiously into the passage.

"Bang!"

"Bang bang bang!"

As soon as the two of them stepped into the hole, the walls on both sides of the passage instantly lit up two rows of burning torches every twenty meters or so, illuminating the entire passage.

Lu Xiao instinctively pulled Zhang Tingting backwards and exited the passageway, but after they withdrew, the torches inside were still burning and were not extinguished because of their departure.

"It should just be a trigger lighting system." After Lu Xiao carefully observed the passage, he explained to Zhang Tingting. Although Lu Xiao's tone was calm, in his heart he admired the wisdom of the ancestors of Huaguo.

It's an underground mechanism that's been nearly 2,000 years old, and it's still in perfect condition!

Listening to Lu Xiao's words, Zhang Tingting nodded lightly, and the two of them entered the passage that had become bright again.

The entire passage is a regular rectangle, and all the traces of hand-carved are on the top, bottom, left and right. The walls are made of marble, bare and devoid of any color. The floor was also paved with regular square marble, covered with a thick layer of dust, and smelled dry mixed with the evaporation of the water of the Yin-Yang River. Every time you step on it, it will kick up a large cloud of dust, making it very inconvenient for two people to breathe.

The two of them cautiously observed the possible mechanisms around them as they slowly moved forward. After walking for about half an hour, the passage ahead changed significantly.

On the wall to the left in front of them, vivid murals appeared.

The two men stopped moving forward at the same time and glanced at each other, both seeing the same choice in each other's eyes.

Perhaps the images recorded in those murals have something to do with this unknown treasure place, and the so-called sharpening knife does not mistake the woodcutter, and continues to move forward like a headless fly, and both of them choose to stay where they are for the time being, and carefully study the murals carved here, to see if they can find some useful clues about the treasure place.

The first stage of the mural depicts two teenagers, kneeling together in front of an old man with a long beard, and behind him is how the old man trains the two men severely.

In the second stage, two very handsome-looking men are handing food to many people with smiles on their faces and genuinely kneeling down, helping them repair farm tools, helping them drive away wild beasts, and so on. At this stage, Lu Xiao and Zhang Tingting can clearly see the satisfied smiles on the faces of the two people.

That kind of smile is exactly the same as the satisfied smile that Lu Xiao raised at the corner of his mouth every time he helped a good person.

And from the faces of the two handsome adult men, you can vaguely see the shadows of the two apprentices, thinking that these two men are what the two children will look like when they grow up.

From this, Lu Xiao deduced that this series of murals was probably their past burned by one of the two men.

At this stage, there are two people who use their bodies to resist the attacks of some fierce beasts and use their lives to protect each other's affairs.

Perhaps it was the superb skills of the person who carved the mural, and when he saw that scene, Lu Xiao could deeply feel the strong brotherhood between the two people.

It's a pity that in the third stage, there was a quarrel between the two people. As time went on, the two of them quarreled more and more violently, and finally even got into a fight.

They are brothers who share life and death, brothers who can use their own flesh and blood to resist the attack of fierce beasts for each other, but the two of them began to quarrel and fight endlessly......

There was no text on the mural, and Lu Xiao didn't know what they were arguing about and why.

The last mural in the third stage depicts one of the men leaving the place, and another man watching him leave, his eyes full of reluctance and sadness.

What is it that turns two brothers of life and death against each other? What was the reason why the man chose to leave? Is it because they can live and die together but not together, or is there some other reason? Lu Xiao's mind was thinking rapidly.

When Lu Xiao looked at the fourth stage of the mural, it was as if he had discovered a new continent, and his eyes burst into a bright light.

The fourth phase mural depicts a boy who stays in his hometown and eventually leaves his hometown like another boy. He stood on a high hill and looked down on the scene where the two armies were fighting below.

The leader of one of the armies was a mighty general, and all the officers and men in his army were like tigers and dragons, and everyone was full of spirit. On the other hand, although the enemy army against them was more than three times the number of the opponent, everyone had fear and trepidation written on their faces.

This is just a very ordinary small background in front of the fourth stage, and the reason why Lu Xiao is a little out of shape. After the victory of the ensuing army, the mighty general returned to the general's tent and met a man who had wrapped himself in his robes. Apparently, that person was behind the leadership of the general's victory over one enemy after another.

When Lu Xiao saw this scene, two words instantly appeared in his mind, "Black robe!" Mystery Man! ”

"Could it be that he is the mysterious person who left his mouth, the mysterious person who controls a huge force behind the scenes and sets off countless bloody storms?" Lu Xiao couldn't help but have such a question in his heart.

From the eyes of the mysterious man, it was not difficult for Lu Xiao to find that the mysterious man was the first man to leave from that place.

In the second half of the fourth stage, it was all the man behind the scenes wrapped in robes who controlled one army after another, leading them to victory over one opponent after another. However, none of the victorious armies seemed to be what the Mystics wanted, and they all died in the traps of the Mysteries.

As for the other man, he has been on a different high ground, observing the mysterious man in silence, observing the brothers of life and death who have broken with him.

The fifth and final stage of the mural depicts the mysterious man who was badly injured for some reason and looked like he was dying. It seems that the idea of returning to the roots of the fallen leaves, the mysterious man returns to the hometown of the two of them and meets his brother in life and death.

At the end of the mural, the mysterious man holds an oval-shaped object like an egg in his hand, praying for his brother to die, but the other man shakes his head mercilessly in refusal.

The mural ended here, but what was left for Lu Xiao was endless thoughts.

Who are the two of them, and whether the person who wrapped himself in his robe is the mysterious person who left his mouth. Is the mysterious man seriously injured in the battle with Li, and is the thing he is holding in his hand the treasure that has been lost for thousands of years by the Hidden Clan?

The questions that Lu Xiao thought of from the mural all filled his brain, making his brain think about it all the time.

Zhang Tingting didn't join the guardian organization and didn't know anything about the God Organization, so she just took the mural as a history record of the two brothers.

When Zhang Tingting saw the last mural and saw the egg-like thing held by the mysterious man, she stretched out a hand with some curiosity and wanted to touch it.

"Don't touch it!"

Lu Xiao, who was thinking about it, came back to his senses and saw Zhang Tingting's movements, and hurriedly yelled. However, it was too late, and at the same time as Lu Xiao yelled, Zhang Tingting's slender jade hand had already touched the mural, and it was too late to take it back.

"Click!" There was a crisp sound, and Lu Xiao and Zhang Tingting heard the sound of a mechanism being opened at the same time. Then a rumbling sound reached the ears of the two men, and the ground began to shake.

"Brother Lu! I ......" Zhang Tingting looked at Lu Xiao with great remorse and wanted to apologize, but was stopped by Lu Xiao stretching out a hand.

Lu Xiao looked at the place where the rumble came from with a solemn expression, because the passage had always been relatively straight, so Lu Xiao, who had sharp eyes, could clearly see that where they came in, there was a round object moving towards them at high speed.

"Rolling Stones? Come on! Lu Xiao, who saw the round ball, was slightly stunned, and then his pupils contracted, and he yelled twice and pulled Zhang Tingting and began to run wildly.

This straight passage is all smooth marble, and there is no place for people to hide.

According to Lu Xiao's visual inspection, the rolling stone behind them was exactly the size of the entire passage, and they could move quickly and unhindered. If Lu Xiao and the others were caught up by the huge rolling stones, the two would be directly crushed into two human meatloaf.

Zhang Tingting's eyes were not as good as Lu Xiao's, and she was a little unclear when she was pulled away by Lu Xiao at first. It wasn't until the two of them ran for a distance that Zhang Tingting turned around and saw the rolling stone that blocked the entire passage without leaving a single gap, and the hairs on her body suddenly rose, and she was instantly shocked into a cold sweat, and she regretted it even more.

If it weren't for his mistake, Lu Xiao would not have been substituted into this dangerous situation by himself.

"Boom!" The loud sound of the rolling stones, like the death knell of death, kept telling the two of them that the time had come to leave this world.

"Whew!" The two of them are running wildly with their lives, staging a realistic version of the speed of life and death, and competing with death.

I don't know how much faster the rolling stone is faster than the two people, only a minute has passed, and the distance between the rolling stone and the two people is only less than fifty meters, but Lu Xiao and Zhang Tingting have been running without anaerobic breathing for so long, and their speed is getting slower and slower.

Thirty meters!

Lu Xiao and the others were still running wildly, but both of them could hear the sound of the stones falling from the rolling stones and crashing against the wall.

Twenty meters!

The speed of the two men did not go any further, but slower and slower, and they already smelled a salty smell on the meteorite.

Ten meters!

It only takes a few seconds for Lu Xiao and Zhang Tingting to be crushed into meatloaf. Suddenly, Lu Xiao made an unexpected move......