Ships load and unload containers at Haikou Port in South China's Hainan Province on Monday. As the main section of Haikou Port, the Xiuying Port can handle about 4.06 million tons of cargo annually, and about 800,000 units of 20-foot equivalent containers. In 2020, Hainan's foreign trade reached 93.3 billion yuan ($14.5 billion), up 3 percent year-on-year, per customs data. Photo: VCG