Crabs are divided into five grades. Qixintian brand was founded in Jiangyin City, Jiangsu Province in June, 2006, specializing in seafood hot pot, and established a new seafood eating method of "one pot and two meals". Since Jiangsu Qixintian Restaurant Management Chain Co., Ltd. was formally established in 2009, Qixintian had 257 stores all over the country by the end of 20021,with footprints in Jiangsu, Shanghai, Zhejiang, Fujian, Guangdong, Hainan and Fujian. To provide quality dining experience for tens of millions of consumers every year, the price of crabs is divided into five grades, 98, 108,18, 128, 158, and then seafood can be added, including abalone, cuttlefish eggs, mussels and shrimp.