Immigration is related to the airport.

Immigrants here only exist when entering or leaving the country. At the airport, it is the counter or window for checking documents (passport, visa, air ticket, boarding pass).

After the plane arrived and disembarked, the passengers crossed the dock and the rest area and headed for the immigration department.

When the plane arrives, the disembarking passengers pass through the boarding corridor and baggage area and walk in the direction of the document inspection port (here, disembarking).

After that, passengers must go through the immigration office to enter the waiting room and dock area.

After that, passengers must arrive at the baggage area and boarding corridor through the certificate processing port (here, boarding)