Tong'an of Xiamen is one of top six places of production of longyan in China. Now it has over one hundred kinds with the plant area of 30,000,000 square meters, and the produced longyan is sold at home and abroad. The longyan produced in Tong'an has large granule, thin peel, thick flesh, juicy, sweet and refreshing. It is used to be the tribute for the emperor in the past and now is the fruit popular among tourists from home and abroad who are eager to purchase.