How was Li Xiaonan the Sparrow defeated?

It was taken with a camera. Sparrow is a spy war revolutionary drama produced by Future Film and Television, written by Haifei and co-starred by Yifeng Li and Zhou Dongyu. The play tells the story of Chen Shen lurking beside Bi Zhongliang, the head of the secret service headquarters of Wang Puppet Manchuria, distributing work under the code name of "Sparrow", secretly transmitting information and successfully "stealing" the "return to zero" plan of the government of Wang Puppet Manchuria. The scene where Li Xiaonan was beaten in the play was shot with a video camera, and the plot was deeply loved by the audience.