Which country contains County-level cities by the names of Wu'an and Langzhong?
Langzhong Langzhong is a county-level city in northeastern Sichuan, China, located on the middle reaches of the Jialing River. It is administered as part of the prefecture-level city of Nanchong. Langzhong has a total population of 840,000, with 200,000 residing in the urban area.
Huoshan County Huoshan () is a county of western Anhui province, People's Republic of China, and is under the jurisdiction of Lu'an City. It has a population of 370,000 and an area of 2042 km2 . The government of Huoshan County is located in Hengshan Town.