As the night falls, Zhang Xueyi guides a group of runners warming-up in a coastal park in Haikou, capital of south China's Hainan province. After some 10 minutes of st
An employee works at a base of Dow Chemical Company in Zhangjiagang, east China's Jiangsu Province, March 8, 2020.(Xinhua) BEIJING, May 21 (Xinhua) -- China has not see