Legend in the southern Song Dynasty, there was an emperor called Song Guangzong, the emperor is a typical love wife as the life of the master, his favorite harem beauty is Huang Guifei, but the concubine is always sick, the palace doctor can not think about. Emperor Gaozong of Song Dynasty had no choice but to post the list in the folk for high people to cure the disease, a Taoist priest of Xianfeng bone undid the list, made hawthorn medicine with rock sugar, and let the concubine eat seven a day, and the result after a month the concubine recovered as before. This made Song Guangzong very happy, since then, the Fang Zi spread to the people, only now we see the sugar gourd.