What is "aigun"

Aigun (; Manchu: Aihūn hoton) was a historic Chinese town in northern Manchuria, situated on the right bank of the Amur River, some south (downstream) from the central urban area of Heihe (which, in its turn, is across the Amur from the mouth of the Zeya River and Blagoveschensk).

The Chinese name of the town, which literally means "Bright Jade", is a transliteration of the original Manchu (or Ducher) name of the town.

Today the former city of Aigun is called Aigun Town a town and is part of Aigun District, which in its turn is part of the prefecture-level city of Heihe. Heihe is one of the major cities in Heilongjiang Province.