noun
Treaty of Aigun (1858)
Historical treaty between Russia and Qing China, signed in 1858, which redefined borders along the Amur River.
アイグン条約は1858年に結ばれた。
The Treaty of Aigun was concluded in 1858.
Standard modern spelling using katakana for the place name.
Ateji spelling; rarely used in modern texts.
From Chinese 璦琿條約 / 瑷珲条约 (Àihún Tiáoyuē), referring to the town of Aigun (now Aihui District, Heihe, Heilongjiang, China).