Mid-September. Yangcheng Lake hairy crabs are usually available in mid-September. Hairy crab is a kind of river crab, called Chinese mitten crab, mainly grows in the estuarine area along the coast from Korean Peninsula to Fujian, China. Hairy crab farming needs to choose a place with excellent natural environment, no pollution, convenient water storage and abundant water plants, and the soil needs to choose a breathable, soft and fertile silt.