C168

If it was a normal, naturally formed cave, how could it be smooth and even?

After experiencing wind, frost, rain, and the baptism of time, now should be full of holes, unable to look straight at.

However … This cave was extremely smooth and perfect, just like a slightly rough piece of art.

Su Yixiao suddenly thought of something.

"Xiyue." Luan Yin, and all of you, come behind me