a channel more than ten kilometers deep appeared at the foot of Tang Yu.

go straight to the hollow area found by Tang Yu!

before entering, Tang Yu reminded: "everyone, pay attention to safety. I left a thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread of thread...