Only thirty. Why is Xu Ziyan locked in a dark room?

We offended Mu Zi's mother, episode six. This urban emotional drama, which is adapted from more than 30 TV series, is directed by Zhang Xiaobo and starred by Jiang Shuying, Tan Ya, Yang Le, Rachel Momo and Li Zefeng. Xu Ziyan finally entered the kindergarten, but Gu Jia invisibly offended Mu Zi's mother of the kindergarten family committee, so there was the plot that Gu Jia's son Xu Ziyan was locked in a dark room. When Gu Jia got home, he found that Xu Ziyan had not come back. He heard from the nanny that Xu Ziyan had gone to Mu Zi's house for a birthday party. When Gu Jia came to Mu Zi's house, he found Xu Ziyan locked in a room. The room was locked, and Xu Ziyan's crying came from inside. This clip is from the sixth episode, so Xu Ziyan was locked up in the sixth episode. From the perspective of three 30-year-old women, the play tells the story of multiple pressures faced by urban women at the important age of 30.