
Tourists collect sea-shells and crabs during an annual marine products collecting festival at Tanmen Bay in Qionghai, south China's Hainan Province, Aug. 5, 2017. (Xinhua/Guo Cheng)

Tourists collect sea-shells and crabs during an annual marine products collecting festival at Tanmen Bay in Qionghai, south China's Hainan Province, Aug. 5, 2017. (Xinhua/Guo Cheng)