Hainan Island is the largest island in my country?

The 42nd largest island.

Hainan Island is the 42nd largest island in the world and the second largest island in China. The land area is about 35,400 square kilometers and the sea area is about 20,000 square kilometers.

Hainan Island is located in the southern part of Guangdong Province. The land surface of Hainan Island is a pear-shaped oval, with its long axis running northeast-southwest. It covers an area of ??more than 30,000 square kilometers and is the second largest island in China. The coastline of Hainan Island is curved, about 1,823 kilometers long, and there are 68 harbors that can be built along the coast. Among them, the candidate harbors that can be built with deep-water ports are relatively scattered. Five major ports have been built: Haikou Port, Sanya Port, Yangpu Port, Basuo Port and Qinglan Port.