In the cold winter of 1959, Liu Guodong, a time-traveler who was injured and changed his job, returned to the Siheyuan of Sijiu City and activated the "Lieping System", earning food stamps and money just by calling on his younger siblings. He received a generous novice gift package and gained super physical fitness and super space. When he went out to look for food, the aunts in the hospital were already talking about his return home, secretly speculating on the separation of the family.