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.
Lianshui County Lianshui County () is under the administration of Huai'an, Jiangsu province, China. The northernmost county-level division of Huai'an, it borders the prefecture-level cities of Lianyungang to the north, Yancheng to the east, and Suqian to the west.