Photo taken on Sept. 4, 2019 shows a crab (L) and its shell at an aquaculture cooperative in Zhili Township of Huzhou, east China's Zhejiang Province. Zhili has been encouraging crab breeders to breed crabs in a scientific and ecological way by planting aquatic plants and feeding crabs organic food. At present, the breeding area of Zhili reaches about 900 hectares, with an annual production of around 100 million yuan (about 13.99 million U.S. dollars). (Xinhua/Xu Yu)