In short, CS is Cordyceps sinensis English abbreviation Cordyceps Sinensis English abbreviation, and 4 is the "No. 4" species, researchers in the development of Cordyceps, the researchers found in many strains of 1 to 200 number Strain, and find the most effective with the closest wild Cordyceps No. 4 fungus, called CS4. CS4 is a strain collected by the "Chinese Pharmacopoeia" and also a Cordyceps fungus capable of both medicinal and healthcare purposes. Cordyceps has many functions, Cordyceps can effectively improve sleeplessness, can reduce nasal symptoms, enhance body resistance, promote heart and vascular health, with beauty and so on.