Father and Son Travel Through the 80S

Two old men traveled back in time to 1978, and the brothers became father and son. A father who is a cadre in cotton spinning, and a son who is a student in primary school. The father is invisible on weekends, and when he appears again, there will be a pile of supplies in the house. The son despises his father every day and puts all the supplies that do not belong to this world into the space. Neither of them can tolerate the other, but neither can live without the other. They are in a small courtyard and two families.