Si Minsan

During the Cultural Revolution, Xie Zhixin (Yuan Yue) learns that his son Xie Feng (Ma Xiaowei)'s lover Ulan (Zhang Xiaolei) is the daughter of his student, Lu Yan (Gao Ying), from many years ago. After watching Ulan's performance, Xie leaves in a hurry; Ulan mistakenly believes that Xie's father has scorned her because he knows that her mother is a "rightist."

Set in 1976, Ye Chuan, the party secretary of a certain city Dongfeng Chemical Equipment General Factory, resolutely implemented the task of trial-manufacturing large-scale chemical equipment issued by the State Council and the Ministry of Petroleum and Chemical Industry.

The young Chinese heir to millions in the USA is suddenly destitute. He takes out a life insurace policy on himself and assigns his former teacher to kill him.

The events that take place on a city bus taken daily by workers, students, intellectuals, housewives and schoolchildren are depicted, and the lives of the two conductors, a hard-working young woman and an impatient and lazy man are contrasted.