i read a manhua on mangadex about a boy who can’t cultivate energy because of his body but he finds a meteorite that fuses with his body and fixed the problem. The boy is from a cultivator family with some noble status and has a beast companion that’s a black bird with one golden feather between its eyes. The bird gets big enough to ride on and the boy uses it to secretly get around while doing assassin work behind his family’s back so they won’t worry and he can surprise them with how much he’s grown. I also know this story is based on a novel that hasn’t been translated yet on this site.