After thinking about it, Chen Yang has no clue and flies down, looking for the residual energy fluctuations and the clues that Lei Feng may leave behind.

While searching, he asked Ge Yinxiang, "helmsman, is there any other place in the back mountain worth noticing besides that square?"

"Back mountain is useless. I wonder what they are going to do when they come to back mountain."

Ge Yinxiang pondered for a moment and said: "however, there is a natural cave in the back mountain, which is several kilometers deep into the ground. Inside, the caves crisscross like a labyrinth, huge and incomparable. However, there is nothing worth exploring there. Lei Feng should not go there. "

This is the only clue, Chen Yang did not give up, said: "where is the hole, we go to see."

Although the back mountain has been razed to the ground, it is very easy for GE Yinxiang to determine the position.

He blasted open the ground and piled up huge stone ruins, and soon found a small hole, because the rocks collapsed and the passage was buried. It was only half a man's height and looked like an animal cave.

If it wasn't for GE Yinxiang, Chen Yang would never have thought that it was several kilometers deep and there were labyrinth like underground caves.

"I really went into the cave."

As soon as he found the cave, Ge Yinxiang felt the faint smell of thunder and lightning. There is no doubt that Leifeng must have entered from here.

"I'm afraid there's something unexpected down here."

In Chen Yang's eyes, Jing mang flashed, and immediately opened up a channel for collapse. He took the lead and galloped down.

In the first few hundred meters, it was just a channel inclined to the ground. The wider it went, the wider it was. Finally, the channel was more than ten meters wide.

Chen Yang observed that the grotesque rocks in the passage were formed naturally.

A few hundred meters later, if you go on, there are crisscross passageways. It seems that they are man-made, but there is no trace of digging.

It has to be said that the nature of heaven and earth, the intricate cave, is only tens of thousands of meters wide, forming such a complex labyrinth, the means of the Lord is not mysterious.

What's more terrible is that Chen Yang found that these underground caves were in line with the way of array. It's not easy to find people here.

If you don't know the array, most practitioners may get lost here.

Of course, it's impossible for the cave to block people. The practitioners can get out of the difficulty by digging directly up.

Lei Feng is full of self-confidence and doesn't cover up his whereabouts. He leaves energy along the way, but it's convenient for Chen Yang and Chen Yang to follow directly.

From the residual energy of Lei Feng, he is not aimless, but has an accurate route, all the way forward, no repetition, no detour.

Obviously, his target is just under the hole.

"Helmsman, have you explored this cave completely?"

As Chen Yang advanced, he turned his head to look at GE Yinxiang and asked.

Ge Yinxiang shook his head: "this cave is very complex, and there is no trace of human survival, so we did not explore it carefully."

Chen Yang's eyes brightened and nodded: "it seems that there must be some secret hidden under the cave. Maybe it has something to do with the demon clan."

"It's about the demons?" Ge Yinxiang looked thoughtful and said, "but in this area, there has never been a demon tribe. Even the demon tribe in leiling mountain range has migrated and gradually developed. Moreover, according to our investigation here, there has never been any trace of demon clan here for at least tens of thousands of years. "

Chen Yang said: "well, tens of thousands of years ago, did the demon invasion war launched by splitting the mountains occupy this area and leave something underground?"

Ge Yinxiang said: "although guiyuanzhou was also a war zone in that war, it had no other resources except a source of stars. Compared with Dangge mountains and many other places, this source of stars is much worse. According to reason, the demon clan should not choose this place as a stronghold. "

"That's right." Chen Yang nodded and said: "it seems that if you want to solve the mystery, you can only go deep into the bottom to find out the truth."

Two people no longer speak, each thinking, rapid progress.

Unknowingly, the two went to the bottom of the earth for seven or eight kilometers, but they didn't reach the end.

This distance is more than what GE Yinxiang said before.

Moreover, Chen Yang speculates that this complex underground cave is likely to be more than 10000 meters deep.

He stopped, looked at the shrinking dragon fish behind him, and said to ge Yinxiang, "helmsman, when we get here, the dragon fish is far away from the array, and its power is weakened. If we continue to move forward, we will be ten thousand meters away from the dragon fish GUI water array, and the dragon fish will disappear completely. In case of thunderstorm at that time, we will be in trouble. "

"What about that?" Ge Yinxiang looked embarrassed, thought about it, and said, "why don't we wait here for the hare. As long as Lei Feng finishes his work, he will surely return. Then, we will take him down."

"No way." Chen Yang shook his head and rejected the proposal, saying: "if you catch Lei Feng, you may not know the truth. What's more, what happens next is likely to be bad for us, so we have to stop it. "After thinking deeply, Chen Yang gave Ge Yinxiang the array flag in his hand and said: "helmsman, you stay here, I'll go down to find out. If there is thunder wind, I will lead him here. You hide, then control the dragon fish, take him down

Ge Yinxiang frowned and said, "are you in danger alone?"

Chen Yang has stepped into the cave facing down and turned back: "even if I can't beat Lei Feng, it's not so easy for him to catch me."

Thinking of Chen Yang's mysterious mirror image, Ge Yinxiang was a little relieved and said, "you should be careful. If you don't see the opportunity, you must retreat as soon as possible. You can't take any risks."

"Don't worry."

Chen Yang accelerated abruptly, and his figure disappeared in the cave in an instant.

Ge Yinxiang hid himself in the crossroads of the caves, held the array flag tightly in his hand, and was ready to control the dragon fish at any time.

But I don't know why, he always felt uneasy and felt that Chen Yang's trip would not go so smoothly.

"Dongfang Xuan is proficient in array, Dan Dao, astronomy, geography and other miscellaneous subjects, so he will not encounter any danger. Moreover, his mirror image, Lei Feng should not be able to catch up

Ge Yinxiang comforted himself.

……

At the same time, Chen Yang soon got to the bottom of ten thousand meters. Fortunately, he didn't bring the dragon fish down. Otherwise, the dragon fish would be useless to Lei Feng.

He continued to fly underground. Gradually, he found that the crisscross cave passages around him were different from those before.

What was formed naturally before, but what we see now has traces of artificial excavation.

With the further development of the cave, the passage has been completely cut by hand. The walls are smooth and the passage has edges and corners.

"What is hidden in the ground?"

Chen Yang was alert and always felt that there would be unexpected gains under the ground.

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