居庸関
In April 1644, the Ming imperial court finally ordered Wu Sangui to move his army south from his fortress at Ningyuan to Shanhai Pass. It was too late, however, and Wu would not reach Shanhai Pass until 26 April. Word reached Beijing that Shun rebels were approaching the capital through Juyong Pass, and the Chongzhen Emperor held his last audience with his ministers on 23 April. Li Zicheng offered the emperor an opportunity to surrender, but the negotiations produced no result. Li commanded his forces to attack on 24 April. Rather than face capture by the rebels, the Chongzhen Emperor gathered all members of the imperial household except his sons. Using his sword, he killed Consort Yuan and Princess Zhaoren, and severed the arm of Princess Changping.