Li Yaping Li Juan's roommate was discovered by her mother-in-law. Which episode was it?

According to the related story in the 22nd episode of the TV series "Double-sided Adhesive", when Li Yaping, the male host, and Hu Lijuan, the female host, were sleeping together, her mother-in-law wanted to say something to Yaping, but she didn't mean to disturb her, resulting in a very embarrassing scene.

Double-sided tape is a family ethics drama, adapted from Liu Liu's novel of the same name, directed by Huatao Teng and starring Christina, Tu Yan Song, Pan Hong and Li Mingqi. The drama tells the story that Li Juan, a girl from Shanghai, married Yaping, a young man from Northeast China who stayed in Shanghai after graduation. Her mother-in-law has a serious traditional thought, which completely conflicts with Li Juan's modern lifestyle. The contradiction between her mother-in-law and her daughter-in-law is increasing and the friction is escalating.