Term in general use in China for the urban administrative unit usually found immediately below the district level, although an intermediate, subdistrict level exists in some cities. Also called streets (administrative terminology varies from city to city). neighbourhoods encompass 2,000 to 10,000 families. Within neighborhoods, families are grouped into smaller residential units of 100 to 600 families and supervised by a residents' committee; these are subdivided into residents' small groups of fifteen to forty families.