History of Jin: Gao Yongchang occupied Dongjing and requested reinforcements from Taizu.; History of Liao: Gao Yongchang, a deputy commander of the…
Gao Yongchang occupied Dongjing and requested reinforcements from Taizu.
高永昌據東京，使撻不野來求援
Location: 金史 卷002 太祖 收國二年閏月
Gao Yongchang, a deputy commander of the Eastern Capital and a Bohai man, usurped power and declared the first year of Longqi.
其裨將渤海高永昌僭號，稱隆基元年。
Location: 遼史 卷28 天慶6年 1月
In the Khitan Eastern Capital, the Balhae people revolt, kill the commander So Bo-seon, and set up Go Yeong-chang, who calls himself emperor, naming the state Daewon.
時東京渤海人作亂，殺留守蕭保先，立供奉官高永昌，僭稱皇帝，國號大元，建元隆基。
Location: 世家 卷14 睿宗 十一年
Place: 東京
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