Portunus trituberculatus is a famous aquatic product in Yanting, Zhejiang Province, and it is well-known in domestic and foreign markets for its delicious taste. Yanting, located in the sea of Aojiang River, is the intersection of cold current and warm current. It is rich in bait and a unique breeding ground for river crabs, so it is rich in river crabs. The river crabs here have a large output and good quality. Generally, it weighs 250-300 grams, and the big one is more than 500 grams. They are fat and strong, delicious and nutritious. Every100g of crab meat contains protein14g and 2.6g of fat. Fresh food is mainly steamed, and salt can also be added to "gun crab" and crab sauce. After rinsing and drying, crab eggs become "crab eggs", which is the best in seafood products. The production season from March to May and September 9- 10/0 is the peak season for producing and breeding varieties, and the Spring Festival is the peak season for harvesting. The local names are Portunus, Guncrab, Sea Crab, Sea Crab, Three-Point Crab, Sea Worm, Water Crab, Portal Crab, Small Door, Cover Fish, Child Crab and Flying Crab.

198 1 year1year1October 23rd, the live Portunus trituberculatus in Yanting, Cangnan County was quickly frozen and sold to Japan by air. Since then, Yanting has undertaken the production and sales of Portunus China in foreign countries, and gained a good reputation in domestic and international markets.

The "crab fried rice cake" cooked by the local chef in Yanting is a famous local dish, which is deeply loved by foreign tourists.