Northern Liao (北遼) (jan 1, 1122 – jan 1, 1123)

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Northern Liao (simplified Chinese: 北辽; traditional Chinese: 北遼; pinyin: Běi Liáo) was a dynastic regime, distinct from the Liao dynasty, established by the Khitan Yelü clan in northern China. The state only existed for a short period of time between 1122 and 1123.

During the reign of Emperor Tianzuo of Liao, the Jurchen chieftain Wanyan Aguda rebelled against the rule of the Liao dynasty. In 1115, the Jin dynasty was officially proclaimed with Wanyan Aguda as its first emperor. In 1122, Emperor Tianzuo fled to Jiashan (north of modern-day Tumed Left Banner, Inner Mongolia) under the military pressure from the Jin dynasty. Subsequently, Yelü Chun was enthroned as "Emperor Tianxi" (Chinese: 天錫皇帝) by Yelü Dashi and Huilibao. The Emperor Tianzuo, on the other hand, was demoted to a prince and given the title "Prince of Xiangyin" by the Northern Liao court. As the Liao dynasty ruled by Emperor Tianzuo still existed, the regime headed by Emperor Tianxi is known in retrospect as "Northern Liao" (Chinese: 北遼).

After the death of Emperor Tianxi, he was succeeded nominally by Yelü Ding, the Prince of Qin. However, as Yelü Ding was in exile with the Emperor Tianzuo, the Empress Dowager Xiao Puxian'nü was made regent. During the regency of Empress Dowager Xiao, her request for the Jin dynasty to recognize Yelü Ding as emperor was denied. As the Jin forces advanced towards the Northern Liao capital, the Empress Dowager Xiao and Yelü Dashi sought refuge at Emperor Tianzuo's exiled court. The Empress Dowager Xiao was executed for rebelling against the Emperor Tianzuo, but Yelü Dashi was spared.

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