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.
Yongqing County Yongqing () is a county in Hebei province, China. It is under the administration of the prefecture-level city of Langfang. It borders Guangyang District to the north, Anci District to the east, Bazhou to the south, and Gu'an County to the west, and has a population of 382,000 residing in an area of 774 km2 .