A customer chooses Hotan jades at Hotan jade trading market in Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, May 16, 2020. The market has reopened recently under COVID-19 prevention and control measures. (Xinhua/Sadat)

A merchant sprays water on the jades at Hotan jade trading market in Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, May 16, 2020. The market has reopened recently under COVID-19 prevention and control measures. (Xinhua/Sadat)

A merchant displays Hotan jades at Hotan jade trading market in Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, May 16, 2020. The market has reopened recently under COVID-19 prevention and control measures. (Xinhua/Sadat)

A merchant displays Hotan jades at Hotan jade trading market in Hotan Prefecture, northwest China's Xinjiang Uygur Autonomous Region, May 16, 2020. The market has reopened recently under COVID-19 prevention and control measures. (Xinhua/Sadat)