C851 Soul-returning needle

Xiong Yu hesitated for a moment, looked at Sun Lan and asked: "You really want to know?"

Sun Lan asked curiously: "What, does this have to do with some secret?"

Xiong Yu laughed and said: "

It's not a secret. "

Sun Lan rolled her eyes at him, and said: "Then tell me."

Xiong Yu quietly took a step away from Sun Lan and started to explain, "In the complex history of human evolution