Songliao Plain of northeast China including Songhua River 松花江 through the Liaoning Peninsula, also called the Northeast Plain 東北平原|东北平原[Dong1 bei3 Ping2 yuan2]
History of the Liao Dynasty, twenty first of the 24 dynastic histories 二十四史[Er4 shi2 si4 Shi3], composed under Toktoghan 脫脫|脱脱[Tuo1 tuo1] in 1345 during the Yuan Dynasty 元[Yuan2], 116 scrolls