What is mean ba household Registration

In China, "household registration" (hukou) refers to a system that officially documents and tracks a person's place of residence and household members. The household registration system is used to determine an individual's access to social services, such as healthcare, education, and housing subsidies. It also regulates migration within the country, as individuals must obtain permission to officially change their registered residence. This system has been criticized for creating disparities between rural and urban residents and limiting opportunities for social mobility.