Liu Minghui went back to 1957. In that era when material life was not very abundant, he successfully became a worker in a steel rolling mill and lived in a courtyard house by relying on the abundant space and materials.

It mainly tells the story of Liu Minghui's daily life in the steel rolling mill and the courtyard, with little violence.

Xiangnan traveled through time and space to a poor creature in a courtyard. After becoming a martyr, all the beasts rushed to suck his blood, but Xiangnan became the official of the security department. Who dares to come?