C149 Cuttlefish Embryo

Teng Yu bent over and dug out the wooden box from the corpse's hands. He weighed it in his hand first and realized that it didn't have a lot of weight.

The cover of the manual was already in tatters. Only the word "mental cultivation method" could be vaguely seen.

"What mental cultivation method is this?" Yin Xu snatched the secret manual from his hands, casually flipped through it