our days later, Yun Feng appeared again by the icy lake surrounded by mountains.The lake surface was covered by thick ice. Everything looked the same as when he first appeared here, as if the last bat..."Kid, if you ever get down on your luck, come visit me at my lab, okay" 。"Grandpa, are you cursing me" 。Yun Feng smiled and slipped into the secret passage, walking away without looking back. 。"I've b...