(150825) — CHENGDE, Aug. 25, 2015 (Xinhua) — A farmer collects potatoes with a tractor in Chengzi Township of Weichang Man and Mongol Autonomous County of Chengde City, north China’s Hebei Province, Aug. 25, 2015. The county has more than 600,000 mu (40,000 hectares) of potato fields. (Xinhua/Liu Huanyu) (lfj)