Two fishermen harvest Chinese mitten crabs from the Yangcheng Lake in Bacheng Town of Kunshan, East China's Jiangsu province, Sept 23, 2014. The 2014 harvest season for Chinese mitten crabs (Eriocheir sinensis) in the Yangcheng Lake, a major producing area, began on Tuesday. Also known as the big sluice crab, the Chinese mitten crabs are favored by many gourmet-lovers and sell well both online and in real markets. [Photo/Xinhua]

A fisherman demonstrates a Chinese mitten crab on the Yangcheng Lake in Bacheng Town of Kunshan, East China's Jiangsu province, Sept 23, 2014. [Photo/Xinhua]