In China, a process of compressed socialization of youth is characterized by multiple spatial, professional and social mobilities. Young skilled Chinese move and circulate to improve their qualification and education levels in order to develop upward social mobility’s trajectories. Young low-skilled migrants’ biographic pathways are structured around spatial discontinuities and horizontal social mobilities. In labor markets, the phenomenon of structural disqualification impacts young Chinese and the risk of downward social mobility has affected the young middle-class. Platforms appear as...