 By April17, both the major garrisons at Datong and Xuanfu had surrendered to Li Zicheng, and most Ming hopes were placed on the last Great Wall pass at Juyong and its defender Tang Tong ().However, just as the Ming court was discussing the means of increasing provisions to Juyong Pass, it received word that Tang Tong had surrendered and let the Shun army through on April21.With all options exhausted, the Ming's Chongzhen Emperor hanged himself as the Shun army entered Beijing on April25, 1644.