Which country contains County-level cities by the names of Wu'an and Langzhong?
Wu'an Wu'an () is a County-level city in the prefecture level city of Handan, Hebei province, China.
Yizhang County Yizhang County () is a county in Hunan Province, China, it is under the administration of Chenzhou prefecture-level City. Yizhang County covers 2,142.7 km2 . As of 2015, it had a registered population of 644,300 and a resident population of 589,400.