Oysters, also known as oysters, oysters (Cantonese) and midges (Minnan dialect), also known as oysters, oyster yellow, oyster white, oyster green, oyster clam, oyster clam, etc., belong to the bivalve class of mollusca. Oysters are produced at the junction of seawater or brackish water and feed on plankton. In the Han dynasty, oyster shells were used as medicine and ground into powder, which was called "oyster".

Basic source

This is the shell of the oyster family, near the oyster river, and it is the shell of the oyster in Dalian Bay.

Origin and distribution

1, oyster: distributed in the coastal areas of Tianjin, Liaoning, Shandong and Hebei.

2. Oysters near the river: distributed in coastal areas such as Liaoning, Hebei, Shandong, Zhejiang, Guangdong and Fujian.

3. Oysters in Dalian Bay: distributed in coastal areas such as Shandong, Liaoning, Hebei, Fujian and Guangdong.