Aerial photo taken on April 30, 2021 shows the Hainan International Convention and Exhibition Center in Haikou, capital of south China's Hainan Province. Haikou, an important city of China's "Belt and Road" initiative and also a core city for the construction of free trade port in Hainan Province, will greet the first China International Consumer Products Expo. (Xinhua/Guo Cheng)
