Because these people rarely have a fixed residence in the early days of coming to Shanghai, they move around, giving people a feeling of drifting, and because they can't have more sense of identity with Shanghai for many reasons, they are named.
Extended data
Sources of upward drift: Some people look for jobs in Shanghai without going to other places after graduation from Shanghai University, and some people leave their original work units to look for jobs in Shanghai after graduation from other places. Although they have achieved employment, they still belong to the "mobile" group from the perspective of the separation of employment and household registration.
Almost all of these people are young people, and most of them often have certain academic qualifications or higher cultural literacy, knowledge and skills. They mainly seek to show their ambitions in the fields of cultural industry and high-tech industry.