Zu Dashou
Zu Dashou had promised to take Jinzhou for Hong Taiji, but when he actually arrived at his old garrison there, he returned to the service of the Ming. He remained at the Jinzhou garrison for the next ten years as its commander. Hong Taiji besieged Jinzhou and Songshan in 1641, and in 1642, Zu surrendered to Hong for the second time. Wu Xiang, whose relief force was defeated at Dalinghe, was killed in 1644 in Beijing by the anti-Ming rebel Li Zicheng, who had captured the Ming capital. Wu Xiang's son Wu Sangui was the commander of Shanhai Pass, the last major obstacle between the Jurchens and Beijing. Wu Sangui, who was also Zu Dashou's nephew, defected to the Jurchens after his father's death, paving the way for the pivotal Battle of Shanhai Pass that established Jurchen supremacy in northern China.