Sister-In-Law: a Feather Duster Is More Useful

A national female martial artist accidentally traveled back in time to ancient times. As a result, the whole family is useless. The parents are partial, the brother and sister-in-law are useless, the relatives are blood-sucking, and the sister-in-law is unservient, uncompromising, and not a holy mother. She runs the family with a feather duster and a modern business acumen, revitalizes the rotten family, subdues the evil people, and makes life prosperous!