Sinan County belongs to tongren city. Located in the west of tongren city, the hinterland of Wuling Mountain and the center of Wujiang River Basin. It covers an area of 2,230.5 square kilometers and governs 28 townships (streets), including 17 towns, 3 streets and 8 ethnic minority townships. There are 529 village (neighborhood) committees in the county (including 487 village committees and 42 community neighborhood committees) with a total population of 700,000.
Sinan ecology is well preserved. To maintain biodiversity, there are Egret Lake National Wetland Park, Wansheng Mountain Forest Park and Siyetun Nature Reserve, and there are precious plants such as Taxus chinensis, Millennium Nanmu King and Millennium Ginkgo, which have been named "China Nanmu Town" by the State Forestry Administration.
Sinan has a long history:
Yelang County in Qin Dynasty, xian county in Han Dynasty, Sinan House in Northern Song Dynasty, Xuanwei House in Yuan Dynasty and Sinan House in Ming and Qing Dynasties. It has a history of more than 4000 years, and its organizational history is 1800 years. Thanks to Wujiang shipping, merchants have gathered since ancient times and the economy and trade are prosperous. It is one of the earliest counties in Guizhou and the regional economic and cultural center in the middle and lower reaches of Wujiang River. Known as "the first county in central Guizhou? The reputation of Wujiang Pearl.