Cortex Lycii is also called lichen or fungus. It is a combination of fungi and algae. The color of Lycium chinense is dark green, smooth and bright, and it grows in the shade of rotten grass roots.

Lycium chinense contains many vitamins and minerals such as phosphorus, zinc and calcium. Every 100 grams of dried product contains 406 mg of calcium, which is the same as Nostoc flagelliforme. It contains 290 mg of iron, which is twice as high as that of auricularia auricula, which is extremely beneficial to human body to supplement iron and nourish blood.