 The Central district is the district that contains City M, the capital of the county.Each district contains one or more cities and/or one or more RAs (rural agglomerations).In our example, the Central district contains City M, City N, and RA T, which is composed of the villages V1, V2, V3, and V4; district X contains City O and RA U; and district Y has no cities and one RA V. The minimal county consists of only one city as the only district, named Central.