East gate. The newly opened liquor store in Haikou Duty Free Shop has a large flow of people. For the convenience of management, we adopt the policy of entering the east gate and leaving the west gate, so we enter from the east gate. Haikou, also known as "Coconut City", is a prefecture-level city and provincial capital under the jurisdiction of Hainan Province, a national "Belt and Road" strategic fulcrum city, a core city of Hainan Free Trade Port, and an important node city of Beibu Gulf urban agglomeration.