My Shadow in the Prehistoric Times Will Hang Up

As a time traveler, Zheng Lei's life was not very good. Not only was he not reincarnated as a big shot in the ancient world, but he also did not obtain a powerful magic weapon. He just entered a small sect in the ancient world. Because he was born with narrow muscles and veins, his cultivation speed was extremely slow. But the shadow hang-up system he obtained by chance completely changed his situation. Qualifications? Talent? What are those things? Can it be eaten? I have no qualifications or talent, but my shadow is able to level up in the fantasy world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.