袁崇焕
On the whole, the Jurchens were not able to break the defense of the Ningyuan garrison even after the death of Yuan Chonghuan. However, in 1644, the Ming emperor ordered the Ningyuan garrison to withdraw to Beijing to defend it against Li Zicheng's rebel army. The Ningyuan garrison was unable to reach Beijing before it fell and the Ming emperor committed suicide. Subsequently, the Manchus defeated the rebel army and captured Beijing.