The Battle of Shanhai Pass, fought on May 27, 1644 at Shanhai Pass at the eastern end of the Great Wall, was a decisive battle leading to the beginning of the Qing dynasty rule in China proper. There, the Qing prince-regent Dorgon allied with former Ming general Wu Sangui to defeat peasant rebel leader Li Zicheng, founder of the short-lived Shun dynasty, allowing Dorgon and the Qing army to rapidly conquer Beijing.
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