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Geolsa Biu was a 7th-century military leader of Baishan Mohe ancestry. Geolsa Biu took an active part in Balhae's effort for autonomy against the Tang Dynasty. Geolsa Biu died in the Battle of Tianmenling, in which Balhae achieved victory and declared autonomy.
In popular culture[]
Portrayed by Choi Cheol-ho in the 2006-2007 KBS TV series Dae Jo Yeong.
