2015 Ninth China International Tea Expo in Xi'an from the geological point of view changes the Southwest rolling hills, valleys, criss-cross varied terrain, resulting in the formation of many small landform area and climate, latitude and elevation above sea level in low difference under widely varying conditions, contributing to climate differences, so that the original tea grown here, slowly split in tropical, subtropical and temperate climates different, resulting in variation in the tea plant, developed into Tropical and subtropical big and the mid-leafed variety of tea, as well as temperate species and mid-lobular variety of tea. Botanists believe that up to a certain species variation of place, is the center of the origin of species. Southwest provinces of Xi'an ninth Tea Expo starting time, China is the largest tea variation, the most resource-rich place, as is the center of origin of tea. 2015 Ninth China International Tea Expo in Xi'an due to the development of society, in the form of tea, tools, social environment and objects will produce a corresponding change, Jiaoran the "designated" tea ceremony meaning, and modern even if it can "build" can understand, such as "between man and nature, dialogue between people and history," the illusory ethereal mood, not in the majority. But the history and culture of tea facts have proved: Tea, has been listing the millennium. People want to get spiritual effect or human contemplation by the Ninth Tea Expo tea things, it is necessary for advancing understanding Liu tea. 2015 Ninth China International Tea Expo in Xi'an Song Dynasty and Song tea culture of tea has been a great development, Xi'an ninth Tea Expo participation fee, promote tea culture, the emergence of the professional associations in the literati tea, There are officials "Tom Club" Buddhists "thousand Club" and so on. Zhao Kuangyin was a scholar addicted to tea, tea things set up organs of Xi'an ninth in court in Bo tea exhibition, palace tea has been graded. Tea has become a ritual instrument system, thanks to the emperor win Minister tea has become an important means of kin dependents pregnant, also gave foreign envoys. As for the underclass, tea culture is lively life, someone migration, neighborhood to "Xiancha" 'Tis some visitor, to respect "ingot tea", when an engagement to: "under tea" marriage to "tea set", the same room To "co tea." Cha Doo folk wind, brought a series of changes plucking cooking points.