Kazuo County, the full name of the left-wing Mongolian Autonomous County in Harqin, is located between 40 47 ′12 ″ north latitude and 4133 ′ 53 ″ east longitude, and between1/kloc-9 24 ′ 54 ″ and120 ″ east longitude. Kazuo County is the only Mongolian Autonomous County under the jurisdiction of Chaoyang City, Liaoning Province. Located in the southern hilly area of Chaoyang City, the upper reaches of Daling River in western Liaoning. It is adjacent to Chaoyang County in the east, lingyuan city County in the west, Jianchang County in the south and Jianping County in the north. It is the intersection of Liaoning, Hebei and Mongolia, the northern passage of the western Liaoning corridor, and an important part of the Bohai Economic Circle. Kazuo County has jurisdiction over 22 townships 1 economic development zone, with a total population of 430,000 and an urban population of 89,000. It is a region with strong Mongolian customs. 1958, with the approval of the State Council, the flag was removed and the county was established. The county party committee and the county government are based in Dachengzi Town. Postal code 122300.