Can a family of three immigrants leave one in their hometown?

A family of three immigrates, and one can stay in his hometown.

According to the relevant public information inquired, the householder registered with the household registration book is allowed to move between the two places, and can move in different places separately, separated from a household registration book, and required to carry ID cards and entry and exit certificates, and can go through entry and exit formalities at the police station.

Immigration is the change of permanent settlement right in a country, and it is the migration activity of population between different regions.