"Forsythia lianqiao is produced in southeastern Shanxi Province surrounded by the Taihang Mountains, Taiyue Mountains and Zhongtiao Mountains, as well as in surrounding areas such as the Funiu Mountains adjacent to this area." 1 Scope 2 Normative references 3 Terms and definitions 4 Origin and form 4.1 Origin 4.2 Morphological characteristics 5 Historical evolution 5.1 Variety evolution 5.2 Origin evolution 6 Authentic production area and habitat characteristics 6.1 Authentic production area 6.2 Habitat characteristics 7 Quality characteristics 7.1 Quality requirements 7.2 Characteristics