Six bullets. There are six rounds of Haikou government bonds in 2022. After grabbing it, you can exchange it at the designated place within the validity period. 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.