C1393 Mangu river of great void!

There was a river in the ancient space, and no one knew where it came from or where it came from. It was as if it had no beginning and no end, and it was invisible and formless, to the point where those who had not reached Innate Earthly Immortal would not even be able to detect the existence of this river.

This river was called the Mangu River of Great Void