Wearing isolation clothes, the white robed guest stood in front of him, looking at the damaged shield with only one corner exposed on the ground, took a deep breath, reached for the edge of the shield, and then lifted it up.

It can be seen that the damaged shield is tightly stuck under the ground, and the white robed guest can pull out the shield bit by bit.

With the movement of the white robed guest, the appearance of the shield slowly unfolded in front of several people. The shield is made of bronze, and the surface is covered with a lot of copper rust. There are also many scratches. Obviously, the shield has collided with a sharp weapon.

Gradually, the whole shield was pulled out of the ground by the white robed man. The shield is rhombic in shape, about 60 cm high. Apart from a missing corner at the top, there are two pieces of broken shield at the bottom.

Before the white robed guest and others studied the shield carefully, the whole WuJie passage suddenly began to shake violently, as if some mechanism had been triggered.

People standing in the pit can clearly feel it. The ground under my feet is shaking violently and collapsing.

The man in plain clothes, who was standing in front of Zhang Xuan, subconsciously took a look at his feet. As a result, as soon as he lowered his head, he was empty at his feet, and the whole person went down.

Zhang Xuan and others were the same. The ground under their feet split almost at the same time.

After falling for a certain distance, several people all fell to the ground, but the ground is not flat, but a downward slope, so that the people who fell on it continue to slide downward uncontrollably.

Zhang Xuan and Bai paoke adjusted their body shape for the first time. As long as they were willing, they could stop their downward trend at any time, but neither of them did. After all, the purpose of this time was to see what was in the fourth underground palace.

The people fell in a hurry, and their lighting equipment was not fully turned on. They just had two strong light flashlights. Because the continuous rotation made the light just like a windmill in a strong wind, the light source could not provide good lighting for the people at all. The bottom of the tunnel was painted black, and even the white robed passenger and Zhang Xuan could not see clearly in this high-speed movement The scene before us.

It took nearly a minute for the taxi to stop. Except for Zhang Xuan and Bai paoke, the other five younger members of the ninth Department all fell to the ground. Fortunately, three of them were protected by isolation suits. The isolation suits were made of good materials and would not be disheartened. The man and woman in casual clothes were in a lot of embarrassment.

Zhang Xuan silently calculated the distance in his heart. They had slipped down at least 200 meters.

Two hundred meters in the martial arts world sounds like nothing, but it's already a forbidden area that 99% of the people in the world have never touched.

When he stopped completely, Zhang Xuan began to look around. His eyes gradually adapted to the darkness of the cave, and could see some blurred scenes.

Zhang Xuanhuan looked around and found that under the cave, it was very broad, just like when he was at the top of hell on the 18th floor. He couldn't see the edge around him, and he couldn't see the sky when he looked up.

"This That's too big! "

Zhang Xuan heard the sound of shock in his headset.

"What's down here?"

Two lights suddenly come on. These are two lighting flashlights turned on by people. The light brought by the flashlights makes people see the surrounding scenes clearly. This is not only the five younger generation of the ninth Department. Rao is Zhang Xuan and the white robed guest. They can't help but open their mouths and look like ghosts.

All around them, there was a vast flat land. Outside the vast flat land, there were layers of black stone roofs.

"Now, it's like we're standing on an altar." A ninth division man in a isolation suit swallowed saliva.

"We are standing on the altar." The white robed guest's voice was an admission of this statement.

At the moment, the place where people are standing is the ancient altar for worshiping heaven. The altar is as big as a football field. Seventeen meters in front of Zhang Xuan's body, a ladder with less than two people running in parallel runs straight down. Counting down, there are hundreds of stairs. There is no other way to get to it from below.

Go to the edge of the altar, look down, from the ground, at least tens of meters high, around the altar, dense black buildings.

The so-called black is not that there is no light all the year round, but the bricks and stones used in the building, that is, the black hard rock. Every building is in the shape of a spire.

The fourth underground palace, in front of Zhang Xuan and others, is clearly a city of WuJie!

Zhang Xuan turns around and finds that the faces of the ninth Department and others, including the white robed guests, are full of shock. Even Zhang Xuan himself is shocked.

WuJie city! It's a few hundred meters away from the martial world. There is a city of martial arts! If this news is released, I don't know how many people will be crazy!

"How can there be a WuJie city here?"

"With the change of times and the crustal movement, the original city on the ground has been buried here all the time?"

"Which dynasty city is this? Throughout the ancient and modern five thousand years of Kyushu, there is no dynasty that flourishes this kind of tower building! "How many people are there in the ninth Department. It's like talking to yourself, making these guesses.

"Martial uncle, do you have any impression?" The white robed guest asked Zhang Xuan on a private channel.

"No Zhang Xuan shook his head. "In my impression. I've never heard of such a city. In ancient Kyushu, it was not just a small town that could build such an altar. At least they are first-class in our country. "

"What is the capital of Northwest China? Is it the ancient Xixia? " The white robed guest made a guess.

"No Zhang Xuan denied the white robed guest's conjecture, "the architectural style of Xixia capital is not so. It's no use guessing. Go down and have a look. "

"Well." The white robed guest nodded.

Several people came to the edge of the altar and looked at the almost vertical hundreds of stairs, the three members of the ninth division in isolation suits. There is a feeling of soft legs.

This ladder is very steep. There are no handrails on both sides. If you don't pay attention to it, you may fall directly.

Two members of the ninth Department in civilian clothes took the lead up the stairs and went down. The remaining three members of the ninth Department in isolation clothes walked in the middle, while Zhang Xuan and Bai paoke came last.

"Teacher, the test results have come out. The Reiki density here has dropped to the lowest value, and there is air circulation. Besides our entrance, there is another way out." The man with the tablet said.

After hearing this, the white robed guest took off his helmet. Sure enough, his breathing was not affected at all in the hundreds of meters of the martial arts world.

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