Hainan Island is China's most southerly province and the second largest island after Taiwan, the largest ocean island and the smallest land province in China, located in the South China Sea about 60 minutes south of Hong Kong by air. The closest city by flight to Hainan Island is Guangzhou (Canton), only 50 minutes to Haikou, the capital city of Hainan Island, and 70 minutes to Sanya. With a landmass of about 34,000 sq km, Hainan Island is made up of Hainan, Xisha, Zhongsha and Nansha islands. The province has a total coastline of about 1,529 km and covers a sea area of about 2.1 million sq km.