Farmers pick tea leaves at a tea garden in Haoping Village of Wenxian County in Longnan, northwest China's Gansu Province, March 31, 2017. Farmers are busy in harvesting tea leaves ahead of the Qingming Festival, which falls on April 4 this year, to produce the Mingqian (literally "pre-Qingming") tea, which are made of the very first tea sprouts in spring and considered to be of high quality. (Xinhua/Ran Chuangchang)??