The Ports of Entry of the People's Republic of China (中华人民共和国的口岸)[a] , according to the definition of "Several Provisions of the State Council on Port Opening", refer to the seaports, river ports, airports, railway stations, border crossings (边境通道), and all other entrypoints through which people, goods, and means of transportation may legally enter and exit the country.[1] Ports of Entry are legal entities and state institutions, and the opening or closing of ports of entry must be announced and implemented after approval by the State Council or by the provincial people's government. "Ports of Entry" are distinct entities to the associated transportation facility (so, the "Tianjin Water Transport Port of Entry" (天津水运口岸) is distinct to "Tianjin Port" [天津港]).
Ports of Entry (PoE) are mainly composed of physical markers and facilities indicating the boundary and signaling national sovereignty, custom agents, and other relevant inspection departments of the State (migration, quarantine, etc.). They are generally located at transport stations (交通港站) entering and exiting the country, and form an institutional and economic complex with the local relevant departments and industry units.[2]: 1
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