Polygonatum sibiricum, a famous doctor at the end of Han dynasty, has been used as medicine; According to legend, Sun Simiao, a famous doctor in the Tang Dynasty, was proficient in health care medicine and lived to 14 1 year. Emperor Taizong's physician: Yuzhu ointment can make people lose their old skin, brighten their complexion, change their temples and live forever. Li Shimin, Emperor Taizong, praised his medical skill and called him "the King of Medicine".