This is a group of people who are invisible, marginalized and forgotten in state-owned enterprises. The book mainly tells about the working status and mental outlook of a group of temporary workers, mainly Shandandan and Huaxiaoyang, who nominally work in glamorous and magnificent state-owned enterprises, but are actually outside the establishment. The unknown psychological activities and mental journeys of a group of small temporary workers in the face of salary, various benefits, and various things, as well as the emotional life behind them.