The front empty, after a big organ, He Tian finally walked out of the cave and came to a bigger cave...

It's a bit wrong to say that the cave is also a little bit wrong, because it's more like a space inside a mountain body, very large, as high as a dozen stories, and as wide as four or five hundred meters. It looks very, very empty.

Looking back, everybody looks serious. According to the calculation of the length of the cave, it is more than 20,000 meters. From the successive descent, climb and descent, it can also be distinguished that the position of standing now is more than...