Cordyceps sinensis is a kind of Cordyceps sinensis, belonging to Sarcomaceae. Every year after beginning of autumn, the bacteria will disperse and parasitize in insect larvae, and spend the winter underground with them. During this period, bacteria will continue to absorb the egg fat of larvae as nutrition and form sclerotia. Finally, the larva has only one layer of skin left. In summer, fungi will run outside from the head of larvae, producing rod-shaped fruiting bodies and turning them into grass.

From this ecological point of view, people in the past thought that winter was a worm and summer was grass, which would peel off in winter and become grass again, so it was named winter and summer grass. Based on the thought of yin and yang in our country, it is generally believed that this is caused by yin and yang, so the explanation of drug effect is that it can treat all kinds of deficiency. Pharmacological research has proved that grass can cure bronchitis in early winter and early summer, and has sedative, antiemetic and antibacterial effects on some tuberculosis bacteria.

Add Cordyceps sinensis to meat or vegetables and cook together. Its nourishing and strong function can penetrate into food, which is quite effective for recovering from illness.