tongweixianIntroduction：Introduction to Tongyu: Tongyu County, belonging to Dingxi City, Gansu Province, in the central part of Gansu Province, east of Dingxi City, southeast and south respectively connected with Qin'an County and Gangu County of Tianshui City, southwest and west respectively, and Wushan County and Dingxi City of Tianshui City The city is adjacent to the west of the county, and the northwest, north, and northeast are close to the Anding District of Dingxi City and Jingning County of Heping County, Baiyin City. Tongyu County has jurisdiction over 6 towns and 12 townships, with 2908.5 square kilometers and 431,400 people (2012). In 2012, Tongyu County achieved a total production value of 249.06 million yuan. The important revolutionary historical relics in Tongyu County mainly include the "Lang Luo Conference" revolutionary site and the site of the Long March Cultural and Entertainment Party of the Tongyu County Red Army.