2. Blueberries, also known as Toast, Black Bean Tree (Daxing 'anling), Du Shi (Xiaoxing 'anling and Yichun), Dianguo, Diguo, Guo Long, Konglong Tang Guo (Jilin), Nerisu (Mongolian), Gaerthe, Wu Ge (Oroqen) and so on. It is a perennial low shrub of Vaccinium of Ericaceae. Native to North America and East Asia, it is distributed in Korea, Japan, Mongolia, Russia, Europe, North America, China, Heilongjiang, Inner Mongolia, Changbai Mountain in Jilin and other countries and regions, and grows at an altitude of 900 ~ 2300 m.