The sales of crayfish in Haikou are good. Haikou Xiaolong sales market is polarized. There are many hotels in Haikou, and catering businesses sell more. Therefore, the sales of crayfish in Haikou City are good. 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.