It can also be called the king of service, the emperor of working, and the nickname of working people includes code farmers, white-collar workers, blue-collar workers, office workers, professional managers, working emperors, package drivers, working-class people and so on.

A coolie is a handyman on the construction site. Generally speaking, coolies on the construction site refer to construction employees who have no fixed posts and mainly do odd jobs on the construction site, which are similar to handyman in the factory, but with different names.