Changyi has been known as the ancient town of silk since ancient times. The silk here has the reputation of being as light as paper, soft and light, not pleated, wrinkled, swaying, sweaty, and durable. From the time of the Zhou Dynasty, "the silkworm weaving and weaving, the weaving of the silk thread" has been produced for more than 3,000 years.

The crab is a unique species of Changyi, and it is also an indispensable food on the table of Changyi people. Changshang crab has large individuals, the shell is hard and solid, and the color is smooth and blue-yellow. The meat of the crab meat is delicate, the taste is tender and firm, the fiber is rich and elastic, and the seafood taste is rich. Mature female crab crab yellow is pomegranate red, female crab egg mass, male crab grease, it is delicious and delicious.

Changyi City is close to the Laizhou Bay of the Bohai Sea. The coastline is 53 kilometers long, with 640,000 mu of tidal flats in the intertidal zone and 3 million mu of shallow sea surface within 5 meters of the isobath. The individual prawn is large and flat, the surface is smooth and transparent, the color is bright, the shell is thin and hard, the meat is tender and delicious, the male is yellow, and the female is blue-blue. After cooking, the whole body is orange red, rich in flavor and has distinctive regional characteristics.