Brother and sister. According to the information published by the Education Resource Network, we can know that Main Stuffing A and Su Mian are brother and sister, code A, good at gunpowder blasting and welding, and have the best relationship with Su Mian. They have a sense of dependence on Su Mian. Beauty for Stuffing is a crime suspense online drama produced by Beijing iQiyi Technology Co., Ltd., directed by Tat Chiu Lee and Liang Xinquan, starring Yang Rong, White and li geng, and starring He Fengtian.