Life is hard. This film uses the story of each member of a family to construct different but similar dilemmas for different age groups. The 5-year-old Tingting entered the kindergarten on the first day, and the individual returned to her closed self after entering the collective; the 78-year-old grandmother, whose partner was dying, never accepted her leaving to volunteered to let her life die; 35-year-old Keyu , Career bottleneck, friendship torture, struggling between principles and friendship; 35-year-old Si Yuan, first tasted the emptiness of life, facing the emotional dilemma, was stuck in life; 30-year-old Kebo, went to jail for his family’s emergence; 60-year-old Axi, because of his son’s imprisonment, he was re-doing his old business and was suspended. In the end, my grandfather passed away, and the van that rushed to the hospital was carrying a family, and it quickly merged into the traffic. They were just one of thousands of families. A mountain that falls on an individual is just a grain of ash of the times. This is exactly the meaning of the question: endless water. The so-called endless period of running water, pedestrians are not yet clear.