户口制

PRC system of compulsory registration of households

a household / door / family

population (counted as number of households for census or taxation) / registered residence / residence permit / (in Hong Kong and Macau) bank account

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

system / to control / to regulate / variant of 製|制[zhi4]

to manufacture / to make

PRC system of compulsory registration