Hovenia dulcis : Golden Gouli, also called Hovenia dulcis Thunb. , is a deciduous tree, up to 10 meters. Shoots, abaxial surfaces of young leaves, petioles and inflorescence axes are initially pubescent and then shed. Leaf blade elliptic-ovoid, broadly ovoid or heart-shaped ovoid. The fruit stalk contains a lot of glucose and potassium malate, which is sweet after frost and can be eaten raw or brewed, commonly known as "horn"; Wood has moderate hardness and beautiful texture, and is used in architecture, furniture making and arts and crafts. Mainly distributed in Shaanxi, Jiangxi, Anhui, Zhejiang, Guangdong, Fujian, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Yunnan and other provinces. So the tree is called longevity fruit tree, and the fruit is papaya. The fruit is ripe and can be eaten raw. The pulp is pulpy and has no stone. The seeds are exposed outside the pulp and taste sweet and slightly astringent. You can also drink it as soup. This soup tastes unique and mellow.