The kid tells his dad to take it easy. He's at the fifth rank of refining, which means that he's going to die if he tries to save the girl. Plus, the kid is only at the fourth level of refining , meaning that he doesn't have the same level of skill as a martial artist. The kid's worried that his dad is planning to kill him, but he can't stop thinking about how lucky he is to be a classmate of the girl's.