In the last years of the Ming Dynasty, natural disasters were extremely serious, social contradictions were very acute, and the Ming government's strict taxes forced the peasants in northern Shaanxi, who were struggling to survive, to take risks and revolt. From the beginning of the peasant revolt in northern Shaanxi in the seventh year of the Apocalypse (1627) to the beginning of the seventeenth year of Chongzhen (1644), Li Zicheng had established the Dashun regime in Xi'an, and the peasant revolt swept the country. After that, Li Zicheng sent troops to carry out a final attack on the Ming Dynasty, and in February, the Battle of Ningwu was fought in Shanxi, capturing Taiyuan. At the beginning of March, datong and Xuanfu were also attacked one after another, and the rebel army pointed its sword at the city of Beijing.
The situation facing the late Ming Dynasty was critical: there were Qing troops on the outside, and they were looking for opportunities to frequently pass the pass, which seriously affected the strategic deployment of the Ming Dynasty to quell civil unrest! There was an irrevocable peasant army uprising, which led to the shaking of the ruling foundation of the Ming Dynasty, the chaos of the ruling order, and the floating of the hearts of the people in the world. For any dynasty, if it cannot stabilize people's hearts and minds and unite the will of the whole country to tide over the difficulties, it will fall into the abyss of disaster!
The theory of the budding of capital in the Ming Dynasty is based on Xu Yikui's "Weaver Pair" and the time node described in the "Weaver Pair" is the end of the Yuan and the beginning of the Ming Dynasty, and if you look at what Zhu Zhongba did, you will find that the so-called capital embryonic period is the end of the Yuan and not the beginning of the Ming Dynasty! Of course, knowing that after Zhu Chongba took the throne, Zhu Yunzhuo took the throne for two years, and it was difficult for Zhu Si Khan to seize the throne, and it was even more impossible for capital to sprout during this period, first of all, Zhu Yunzhuo's period was to completely copy Zhu Chongba's policy, and Zhu Chongba's establishment must be implemented to the end.
In the last years of Chongzhen, the Ming Dynasty still had a highly effective Guanning Iron Horse, and when the Beijing Division was threatened, if the elite troops of the border guards were transferred back to Qinwang, the peasant army might not be able to successfully take the city of Beijing. Because in the future battles, whether it was the Battle of Shanhaiguan or the pursuit of Li Zicheng's rebel army with the Qing army, Wu Sangui's Guanning Iron Horse showed extremely high combat effectiveness. Just as the peasant army broke through the Shanxi defensive line and advanced toward Beijing, a minister in the DPRK said to the Chongzhen Emperor: "Hanging two hundred years away, there is no domain on three sides, and it is extremely difficult to defend the imperial court." Moreover, the atmosphere of Kou was forced by the day, and the three auxiliaries were terrified, so they withdrew their troops and returned to the gate, and selected Rui shi to go west to curb Kou, and also to save the chaos. "Abandon Ningyuan and Qiantun Ercheng outside Shanhaiguan, migrate Wu Sangui into the customs, and defend the capital division in the suburbs of Tunsu." Faced with the grim situation of the approaching peasant army, the Chongzhen Emperor ordered the cabinet members to discuss, but the ministers did not dare to propose the strategy of transferring back the elite border defense for fear of bearing the crime of abandoning the land of Liaodong in the future.