C207 Jindan

"Grandfather doesn't seem to have used this key. I know all the locks in the house." Liu Yiyi confirmed.

"If it's not home, then what is it?" Zhan Ming shook his head, but just then Liu Yiyi said, "By the way, Elder Brother Zhan Ming, there's a small hill behind our old house. There's a small hut on the hill where Grandpa usually trained, and since Grandpa died, I'll lock that up too