What was the episode of seeing Chen Shu's waist at the Peace Hotel?

According to relevant information, in the 24th episode of the TV series "Peace Hotel", Chen Jiaying, played by Chen Shu, put the information in his lower back and passed it on to his comrades-in-arms because he wanted to steal local secrets.

Peace Hotel is a spy war mystery drama, directed by Li Junhe Bai Tao and starring Chen Shu, Lei Jiayin and Li Guangjie. The play tells the story of a group of mysterious guests who played a life-and-death game for 10 days in a luxury hotel called Peace Hotel occupied by the Northeast in 1935.