C1107 Real Challenges

Hong Tian's eyes were staring at the sky as if a flock of geese were flying over.

There was nothing in the sky. Even the clouds had disappeared, leaving only the sun emitting its own light and heat.

"So that's how it is." Li Su said.

Hong Tian then explained the rules of this challenge to Li Su.

Hong Tian's experts would be divided into seven groups