A Mutual Love Between the Two Qins

She rushes over to celebrate her boyfriend's birthday, only to witness him putting on a steamy show in the office with his half-sister, who shares the same father. After dumping the scumbag, she gets pressured into marrying him. Just then, a handsome man appears out of nowhere and boldly says, "Marry me! I'll take care of everything!" To get away from the scumbag, she hastily marries the handsome man, but after the wedding, their fake marriage turns into true love. This scheming husband-and-wife duo sets out to take down the mistress and punish the scumbag. But with all the twists and turns, can the lovers really have a happy ending? Will they uncover the scumbag family's true motives and protect the family secret manual...