Xiao Yong, deputy director of the Grassland Management Office of the Forestry and Grassland Administration in Tibet, says the harvesting season for cordyceps is from around April 20 to the end of July every year.
According to Chinese medicine literature, it is sweet in taste and warm in nature, and has the functions of nourishing the lungs and invigorating the kidneys. It is recognized as one of the "three great supplements", along with ginseng and deer antler. There are 507 species of cordyceps in the world, of which only one can be called Cordyceps sinensis, while the remaining 506 species are general cordyceps.