Dandong's specialties include Huang Zi, cold noodles, forks, fried silkworm chrysalis, braised pork, shrimps, roasted corn, dried luobing, steamed stuffed buns and tofu. Astragalus seeds are produced in the shallow sea of the Yellow Sea, and their meat contains protein, vitamins, calcium, phosphorus, iron, selenium and other nutrients needed by the human body.

The shell of Astragalus membranaceus is medium-sized, nearly oval, hard and thin, and the top of the shell is not obvious. Located near the center of the shell, the front and rear ends are curved, and the shell surface is yellow or yellowish brown. The growth line on the shell surface is fine, and the lower edge of the annular muscle mark is dark purple. There are 3 main teeth on the left and right shells, 2 main teeth on the front and rear sides of the right shell and 65,438+0 main teeth on the front and rear sides of the left shell.