Haikou is located in Hainan Province, China, with a tropical monsoon climate, which is warm and humid all year round. By February 19, 2024, Haikou can wear light and breathable clothes, such as short-sleeved T-shirts, shorts or skirts, and carry sunscreen products, such as hats, sunglasses and sunscreen, to cope with the strong sunshine. Haikou is located in the north of Hainan Island, bordering Wenchang in the east, Chengmai in the west, Ding 'an in the south and Qiongzhou Strait in the north. It is the political, economic, scientific and cultural center of Hainan Province. By the end of 2022, the permanent population of Haikou City was 2,939,700, and by the end of 2022, Haikou had jurisdiction over xiuying district, Longhua, qiongshan district and Meilan.