puanxianIntroduction：Introduction to Pu'an: Pu'an County is located in the northern part of Guizhou Buyi and Miao Autonomous Prefecture in the south of Guizhou Province. It is connected to Qinglong County in the east, Xingren County and Xingyi City in the south, Panxian in Liupanshui City in the west, and Liuzhi Special Zone in Liupanshui City in the north. The meaning of "under the heavens, all beings, peace and interest". In 2011, the county was 1,429 square kilometers. It consists of 8 towns and 6 townships, and the county seat is Panshui Town; there are 254,000 mu of cultivated land; the county has a population of 331,900, and it is inhabited by more than ten ethnic groups such as Han, Miao and Buyi. In 2012, the annual GDP of Pu'an County reached 3.543 billion yuan. There are 46 rivers in Pu'an County, and the theoretical reserves of water energy are 270,000 kilowatts; there are 28 kinds of minerals such as coal, gold, iron, silicon, lead and zinc. Pu'an County has more than 20,000 of the world's oldest four-ball tea trees, which is the hometown of Chinese ancient tea trees.