Traditional Chinese medicine is divided into Chinese herbal pieces, Chinese patent medicines, pills, powders, ointments, pills, etc. Usually five years. There are also Chinese medicine granules and so on. In fact, it can be used for decades, such as mineral medicine, animal medicine, rhino horn, cinnabar and so on. And it is unrealistic to throw away ginseng antler for five years. So we should use it flexibly, and don't listen to some layman's rules and waste the country's precious resources!