When you leave the country, you should call the police station or enter or leave the country.

Entry and exit management. The duty of the police station is to be responsible for the social conditions and public opinion within the jurisdiction, the social order and public security order within the jurisdiction, and the household registration management within the jurisdiction. The Exit-Entry Administration undertakes the dual functions of foreigners management and exit-entry management in this city. The State Administration of Immigration (People's Republic of China (PRC) Exit-Entry Administration) was established on April 2, 2008. It is the national bureau and deputy ministerial level under the management of the Ministry of Public Security, and is responsible for leading and managing the national entry-exit frontier inspection agencies.