Rio vs Chaohu

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Chaohu (Chinese: 巢湖; pinyin: Cháohú) is a county-level city of Anhui Province, People's Republic of China, it is under the administration of the prefecture-level city of Hefei. Situated on the northeast and southeast shores of Lake Chao, from which the city was named, Chaohu is under the administration of Hefei, the provincial capital, and is the latter's easternmost county-level division.

On August 22, 2011, the Anhui provincial government announced in a controversial decision that the prefecture-level city Chaohu was to be split into three parts and absorbed into neighboring cities. Juchao District was renamed to Chaohu as a county-level city under Hefei's administration.

Source: Wikipedia