Lingyun county, called Sicheng in ancient times, belongs to Baise City, Guangxi Zhuang Autonomous Region. There are four rivers criss-crossing the city and meet here. It is an ancient cultural city with a history of nearly a thousand years. The altitude of lingyun county is between 2 10 and 2062 meters. There are 365 people over 100 years old in lingyun county, which is higher than the proportion of the population in the world's longevity area identification standard. It is the first "China National Longevity and Health Care Base" and enjoys the reputation of "Water Town on the Mountain, Lingyun in Ancient House and Livable Paradise". 1 county covers an area of 2053 square kilometers, governs 8 townships (including 4 Yao townships) and10 administrative villages (communities), and is inhabited by three major ethnic groups, namely Zhuang, Han and Yao, with 201kloc-0/total population at the end of the year/kloc. Lingyun county has successively won national, provincial and ministerial honorary titles such as "Famous Tea Town in China", "National Greening Model County", "National Garden County", "National Advanced County for Safe Construction", "National Key County for Tea Production", "National Western Education" and "Guangxi Health County".