Gao Qisheng, a character in the criminal investigation drama The Knockout, was played by Su Xiaowan. Gao Qiqiang's younger brother, Gao Fei Xia. My brother, who used to sell fish in the old factory street vegetable market, opened the first PHS shop in the city together, which was very successful. After his brother embarked on the road of crime, he tried his best to join in and give his brother advice with what he had learned. Later, after his brother completed the identity jump, he became even crazier and began to sell pills. Finally, in order to save his younger brother, he fell to his death with Li Xiang.