Hainan social security, residence permit, foreigners with residence permit) when buying duty-free goods to prepare for settlement, inform the cashier of the way of picking up the goods, which can be selected from airports, railway stations and docks, returning to the island to pick up the goods and sending them by mail. If you choose to return to the island to pick up the goods, the place for returning to the island to pick up the goods is the fourth floor of Sanya Sea Travel Duty Free City, and the time for returning to the island to pick up the goods is 10: 00-22: 00. When returning to the island to pick up the goods, you need to pick up the goods yourself, bring your ID card, prepare the flight back to the island (you can enter it in the official mall in advance), confirm the departure of the island by face recognition (confirmed by the system), and pick up the goods after electronic signature.