456 Area Code
Heihe | Heilongjiang | China
Heihe (Chinese: 黑河; pinyin: Hēihé; "Black River") is a prefecture-level city of northern Heilongjiang province, People's Republic of China, located on the Russian border, on the south bank of the Amur River, across the river from Blagoveshchensk. Heihe has an urban population of about 211,313, while..
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