Farmers walk to pick tea leaves at a tea garden in Wuyishan, southwest China's Fujian Province, April 17, 2019. Farmers here are busy with making tea these days with the coming of Guyu (Grain Rain) on April 20, one of the 24 solar terms observed by ancient Chinese to carry out agricultural activities according to the position of the sun at the zodiacal circle. (Xinhua/Chen Ying)