Staff cook Chinese mitten crabs during a crab harvest festival of the Yangcheng Lake in Suzhou, east China's Jiangsu Province, Sept. 23, 2016. The 2016 harvest season for Chinese mitten crabs (Eriocheir sinensis) in the Yangcheng Lake, a major producing area, began on Friday. Also known as the big sluice crab, the Chinese mitten crabs are favoured by many gourmet-lovers. (Xinhua/Ji Chunpeng)