He took the throne in 976 when his brother
赵匡胤 died suddenly, and a legend called
烛影斧声 'candle shadows and the sound of an axe' hints that he killed him. He conquered the Northern Han in 979 and so finished reuniting China, but failed to win back the Sixteen Prefectures from the Liao. Tradition also says he had the captive poet-king
李煜 poisoned.