Why didn't Li Sizhong be used in the Henan Opera film Bao Qingtian?

Did not meet the requirements of the film. Li Sizhong was not used in Bao Qingtian, a Henan opera film, because Li Sizhong had a fixed program during his performance, which did not meet the requirements of the film. Wu Xinping of Shangqiu Henan Opera Troupe replaced Bao Zheng. Bao Qingtian, a Henan opera film, is adapted from the classic Three Heroes and Five Righteousnesses. Bao Qingtian tells the story of Bao Zheng, a great official in the Song Dynasty, who was not afraid of powerful people and was honest and clean, so he was called "Bao Qingtian" and "Bao Gong".