Gwanggaeto himself attacks and conquers Biryu, a small nation located in central Manchuria, during a campaign against Baekje in 395. (Its exact location is not known but it was not very far from the Songhua River.)
…the Haixi Jurchens of modern Heilongjiang and …
“And in the absence of facts, myth rushes in, the kudzu of history.”
― Stacy Schiff, Cleopatra: A Life (2010)