1. Jingshan Park, Emperor Chongzhen was martyred. Hong Guang regime chose to unite with Lupingkou 1644, and Li Zicheng, the self-proclaimed emperor of Dashun, led 200,000 peasant troops around Beijing. Emperor Chongzhen hanged himself in Jingshan Park in the case of no way back. However, Li Zicheng did not gain a foothold in Beijing. His series of perverse actions in Beijing led to complaints from Beijing. Under the guidance of Wu Sangui, Dourgen led the Eight Banners into the customs. In the battle of Shanhaiguan, Li Zicheng was defeated, with more than 654.38+05,000 casualties. After that, Li Zicheng fled Beijing and returned to Shanxi. The news of Emperor Chongzhen's martyrdom spread to Nanjing. After a flurry, Nanjing's ministers made King Axe and Zhu Yousong emperors. Nan Ming was very happy when he learned of Li Zicheng's defeat and sent envoys to Beijing to congratulate him. However, for the Manchu who just entered Beijing, there is no defense at all. This is exactly what Dourgen wants to see. He paralyzed Nan Ming many times.
Facing Dourgen, who had just entered Beijing, Nan Ming sent envoys to Beijing for negotiations. The price of Nanming was that the Yellow River was the boundary, and the area north of the Yellow River was owned by Manchu. This means that even Beijing and Nanming, the capitals of the Ming Empire, are not needed. At the same time, the envoys of Nanming made a request to Dourgen to attack Li Zicheng together, which was the later policy of uniting Lu and Pingkou. Dourgen designated Li Zicheng as the primary enemy and ordered the main force of the Qing army to attack Shaanxi, the last base area of Li Zicheng. At this time, although Henan and Shandong are nominally Li Zicheng's territory, they are actually areas without * * *. Nanming's best strategy is to March into Henan and Shandong, with the Yellow River as the first line of defense, so that it is in a favorable position to advance, attack and retreat. However, Nanming actually chose to wait and see, and the Ming army in the southwest took the initiative to attack Li Zicheng and achieved some victories.
Second, due to the initial strategic mistakes, after the Qing army defeated Li Zicheng passively in Shaanxi, Nan Ming's attitude was to beat Reservoir Dogs. The Ming army in the same area prepared the body of Li Zicheng, a mechanic, but an accident happened and Li Zicheng died at the hands of a group of local armed forces. After Li Zicheng's death, his remaining more than 200,000 peasant troops immediately fell apart, some surrendering to the Qing court and some surrendering to Nanming. After the collapse of Li Zicheng's strength, the Qing court immediately turned around and attacked Nanming. At this time, Nan Ming finally understood the situation, but it was too late. Shi Kefa died in Yangzhou, and then the Qing army conquered Nanjing. The Hong Guang regime in Nanming declared its demise. Due to a series of strategic mistakes of this regime, several successive regimes are in a passive position. After the establishment of the Longwu regime in Fujian, Emperor Wudi of Longwu put forward the idea of uniting the residual peasant army. But before this plan could be implemented, Emperor Long died in Tingzhou.