Under the hole is a slope, all the way down, very gentle.

But Yang Dongqing walked very slowly, he was very careful, the cave was pitch black, and his perception was tightly locked on Xiaoqing. He didn't notice the sudden appearance of this kid just now, and now he was even more surprised.

With the current strength of Yang Dongqing's thoughts, he could feel the heartbeat of the human body and even the blood flow within ten meters. But Xiao Qing was only about five meters away from him, but he couldn't feel this, as if this child was a dying person, and even his breath was extremely weak.

"How can this be?" Yang Dongqing became more and more puzzled, and at the same time, he was more curious, who was this child, why did he know about the entrance, and what did he want to do?

Of course, Yang Dongqing was more cautious, he always grabbed Rose and didn't let go, as long as the situation was not right, he would hide in the space.

Xiaoqing didn't say a word along the way, like a puppet manipulated by someone, walking forward without hurry, all the way down.

After walking for about half an hour, Yang Dongqing estimated that it should be two kilometers away from the ground now. Surprisingly, there is no bit of stuffiness here, it is dry and refreshing, and it is quite comfortable. Not far ahead, there were already dots of bright light, and Yang Dongqing also felt a very chaotic energy fluctuation.

Further on, the slope became more gentle, the darkness slowly faded, and a large number of fluorites appeared around. At this time, a colorful world appeared in front of their eyes. The fluorite radiates a variety of colors and reflects the underground space beautifully.

Yang Dongqing looked left and right and found that the space here was very large, and it was very neat, with obvious traces of excavation, and the fluorite stones were all placed.

"It's all radioactive minerals. Yang Dongqing's gaze swept over the fluorites, and he felt even stronger energy fluctuations.

Looking further afield, he found many passages, just as he had imagined, leading in all directions, so there were notes on the map.

"The Lost City, I don't know how it got its name. This kid named Xiaoqing must have something to do with this place, will he recognize the words on that picture....... besides, who is that picture coming from, and what is the purpose?What does Rose have to do with this......." Yang Dongqing summarized these questions in his mind and continued to follow Xiaoqing forward!

Soon, Xiao Qing led them into a passage on the left.

"This should be the direction marked by the red line. Yang Dongqing pulled Rose and followed her into the passage.

The inside of the passage is brighter than the outside, and there are more fluorites in it. Because of the radiation, the energy here is also more mixed.

"If ordinary people come in, the radiated energy alone can kill people. Yang Dongqing looked up and down and found that the passage was very wide, and the stone wall was very smooth.

"How long has it been like digging a passage so deep underground? Could it be that the natives of this planet were not civilized at that time, and because of the harsh environment on the surface, they ......" Yang Dongqing walked forward, analyzing and thinking racing.

The passage is very long, and there is always a fork in the middle, but follow the red line on the map and keep walking. Xiaoqing in front also walked like this.

After going forward for a while, Yang Dongqing made a new discovery. He actually saw carved murals on the stone walls.

"Huh?" Yang Dongqing immediately leaned over, slowing down his pace, watching as he walked. Fortunately, Xiaoqing didn't walk quickly, and he was able to watch the carvings on the stone wall in its entirety.

The murals are very simple, and at a glance you can tell that the tools for carving are rough and not fine. The people in the picture are of a race that Yang Dongqing has never seen, with thin and withered bodies, small and small heads, and the peculiar thing is that they have four ears on both sides of their cheeks. The content of the carving is also very simple, basically planting, hunting, and sacrificial activities.

Judging from the murals, the sacrificial activities are very frequent, almost throughout the lives of these people, whether it is planting, harvesting, hunting, or even eating, they will hold sacrificial activities.

Yang Dongqing walked forward for a long time, and the opportunities he saw were all repetitive images, although the location of the sacrifice and the location of the event were different, but the content was the same. And the sacrificial situation is also very simple, just worship around an altar. However, the further you go, the more detailed the picture becomes, which indicates that the tools for engraving have improved.

"What useful information did you think you would find?" Yang Dongqing gradually lost interest. He had thought he would find something to do with Rose, but the cookie-cutter, repetitive mural had little value.

Just when he was disappointed and wanted not to look at it, the mural suddenly changed. In one of the murals, a ball of fire falls from the sky, and the people below look terrified.

In the next mural, the sky and the earth are cracking, the earth is shaking, the volcanoes are erupting, the rivers are dry, and the earth is cracking.

After this mural, the planting is gone, the hunting is gone, and people are sacrificing every day.

The picture that follows is a large number of dead people, and the despair of people in the midst of hunger and cold.

"Scourge! This is supposed to be an asteroid hitting the slave planet. Yang Dongqing secretly analyzed.

At this time, the picture changed again. Just as people were making sacrifices, a human figure appeared in mid-air. He has no face and glows all over his body.

"Sixth-level master?" Yang Dongqing secretly guessed in his heart. However, he didn't understand why this man had no face and was still portrayed with light.

Continuing to look down, this figure not only brought the natives a lot of food to help them get through the difficult time. Also give them treatment of diseases.

Next, the people, who had finally settled down, began to rebuild the altar under the guidance of this humanoid......

Seeing this, Yang Dongqing's heart moved, and he thought of a possibility. Perhaps the glowing man in the mural is the god in the text. If the mural is linked to the map, then the natives of the slave star regard this sixth-level master as a god.

"What is the purpose of this sixth-level master in rebuilding the altar? Did he release this picture? What does it have to do with Rose?" At this time, Yang Dongqing's attention was on the mural, and she didn't notice that Rose had become silent, and her eyes had been focused on Xiaoqing in front of her, and her gaze gradually froze.

Before you know it, the passage is coming to an end, and the mural is gone. As soon as Yang Dongqing looked up, he saw a large space in front of him, and in the middle of the position, there was a high platform.

This high platform is circular, three meters high, about thirty meters in diameter, and looks like a whole heavy rock from a distance.

"This is the altar!" Yang Dongqing had just said secretly, when Rose suddenly exerted force, withdrew her hand from his hand, and rushed towards the altar.