The so-called "worm" actually refers to the larvae of cordyceps bat moth. Under normal circumstances, cordyceps bat moths lay eggs and the ground, as well as the eggs become larvae will be drilled into the soil, this time easy to be invaded, when the bacteria into the body of the worm inside, the worm nutrients are absorbed, germination of mycelium, larvae stiffen and die. This is the "same kind". Although the larvae die, the fungus inside the body is still growing. After the winter, a small plant will grow in late spring or early summer next year, i.e. "summer grass". Cordyceps is actually a parasite on the larvae on the throne of the fungus and the corpse of the complex, so mites are not grass.

For Cordyceps, many people are not unfamiliar, but also know that it is very expensive, is a real "precious" maintenance products. The reason why Cordyceps is so valuable is because of the small amount. After all, "things are rare". The growth of Cordyceps is so wonderful and unique that it is still impossible to produce it on an artificial scale, and everyone knows that it is more difficult to harvest, so it has been a precious Chinese medicine since ancient times. Of course, now the price of Cordyceps is so expensive, and part of the reason is "fried". Cordyceps is only one of the more than 190 species of cordyceps in China, mainly produced in the Tibetan plateau, referred to as "Cordyceps". Cordyceps is ergot fungus and fungus Cordyceps parasitized in the bat moth and insect larvae and larvae of the complex of the body, the main active ingredient is cordycepin, cordycepic acid, cordyceps polysaccharides, and other substances to help the human body to absorb the substances, with the regulation of the immune system function, prevent fatigue and other efficacy.

Cordyceps is mainly distributed in China's Qinghai, Tibet, Sichuan, Yunnan, Guizhou, Gansu at an altitude of about 4,000 meters, the northeastern region of Jilin, there are also farming Cordyceps. Experts according to the origin is divided into Qinghai grass, sauce grass, Tian grass, Yunnan grass, etc.. There are also produced in Qinghai and Tibet collectively known as Zhang Dongjian Xia Cao. Generally speaking, the inner quality of Cordyceps produced in Qinghai and Tibet is superior to that of other places.

Qinghai Cordyceps contains about 7% of the cordyceps acid, about 25% of the protein, about 8.4% of the fat, of which 82.2% is the human body can not synthesize the essential unsaturated fatty acids, contains 28.9% of carbohydrates, 12 kinds of free amino acids, 18 kinds of water retaining amino acids, of which the adult should also have a food supply of all the 8 kinds of amino acids also known as the North Cordyceps is the ergot fungus and the Fungal pupa of the locus (grass), the head of the ovary is oval, the upper part is bluntly rounded, the color is orange or orange, the stalk is thin and cylindrical, the host is the night moths and larvae, usually develops into a pupa before it dies, so the insect is an oval pupa, can not see the body of the insect, it is easy to identify.