Can you recommend a transmigration novel with a modern assassin as the female protagonist and Lord Xuan as the male protagonist?

At first, the female protagonist hid her appearance. The female protagonist's sister was a homosexual and liked the female protagonist. Later, because of her mother, the female protagonist was brought back to a certain gang by a man who liked her mother and became the leader of the gang. The female protagonist's martial arts were extremely high, but she usually killed people without using martial arts. She had two peerless weapons, a zither and a knife. The zither's sound could control others... Please name the novel ~~

Answer 1

" Proud World: Mercenary Ruffian Princess " fit the description. The male protagonist was called Tuoba Xuan, and the female protagonist was a modern assassin who had traveled back in time. I hope you like my recommendation.