Wu Sangui

Wu Sangui was a Ming general who opened Shanhai Pass to Manchu forces in 1644, helping the Qing dynasty seize Beijing and establish rule over China.

Ming dynasty: A Chinese imperial dynasty that ruled from 1368 until the Qing conquest in the seventeenth century. Wu served the dynasty whose collapse forced his decisive choice in 1644.
Great Wall of China: A network of fortifications built and rebuilt across northern China over many centuries. Shanhai Pass, where Wu controlled access, was part of the Ming Great Wall system.
Chongzhen Emperor: The last emperor of the Ming dynasty, who ruled from 1627 until his death in 1644. His death during Li Zicheng’s capture of Beijing ended the Ming court Wu had served.
Han Chinese identity: A cultural and ethnic identity associated with the majority population of China. Wu’s alliance with Manchu rulers became a touchstone in debates over collaboration and identity.
Yuan Chonghuan: A Ming general who defended the northeastern frontier against Later Jin forces before his execution in 1630. His resistance to Manchu expansion contrasts with Wu’s decision to ally with the Qing.
Qing dynasty: China’s last imperial dynasty, founded by the Manchus and ruling from 1644 to 1912. Wu’s alliance with its founders helped them capture Beijing and extend their rule.
Eight Banners: A military and social organization that structured Manchu forces and later incorporated Mongol and Han units. The Qing army Wu admitted was organized around this banner system.
Hongguang Emperor: The first emperor of the Southern Ming, who ruled from Nanjing after Beijing fell in 1644. His regime represented a competing Ming successor government after Wu joined the Qing.
Chinese historiography: The study and writing of China’s past across changing dynasties, political traditions, and modern states. Changing judgments of Wu reflect how historians interpret dynastic loyalty and conquest.
Hong Chengchou: A Ming official and general who surrendered to the Qing and later served its government. His defection shows another route from Ming service to Qing administration.

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