Li Zicheng captured the capital in 1644. After capturing Chen Yuanyuan, he was comforted and promised Wu Sangui to come to Beijing for reunion. He also specially selected 10 maid to take care of Chen Yuanyuan's diet and daily life. Then he surrendered to Wu Sangui at Shanhaiguan with twenty-two thousand silver, two hundred gold and one thousand brocade, and promised to be the marquis of Wu Sangui. Unexpectedly, Li Zicheng's subordinate Liu Zongmin copied Wu Sangui's home, arrested Wu Fu, and occupied Chen Yuanyuan, so Wu Sangui settled down and fought Li Zicheng in Shanhaiguan, so there was the story of Wu Sangui's "rushing to the top and being angry as a beauty".

This story seems reasonable and worthy of scrutiny. As the company commander of Shanhaiguan in Ming Dynasty, Wu Sangui had more than 30,000 soldiers. For the sake of a woman in the world of mortals, regardless of the life and death prospects of his 30 thousand soldiers, he was cursed forever?

So why did Wu Sangui fall to the Qing Dynasty? This should start with Wu Sangui's character. Wu Sangui was indecisive and indecisive on the issue of lowering the Qing Dynasty and resisting the Qing Dynasty. Later, when the peasant army attacked on a large scale, Wu Sangui was anxious to visit Dourgen himself. Dourgen Wu Xusan split the land seal king and said, "It's a great honor for you to avenge the old Lord. This time, I led my troops into the customs and strictly ordered the troops to observe discipline. Anyone who dares to grab a grain of rice and touch a blade of grass will be put to death by military law. I hope you can tell the people in the customs not to panic. " Wu Sangui was so grateful after hearing this that he vowed to kill the horse with Dourgen and never be negative.

So Wu Sangui ordered the Shanhaiguan gate to be opened and the Qing army entered the customs. Guan Ningjun was the pioneer, and the Qing army was behind, fighting Li Zicheng in Shanhaiguan. Shanhaiguan World War I, Li Zicheng was defeated. After entering Beijing, Dourgen broke his word and Wu Sangui had no choice. In Bian Xiao's view, the Qing Dynasty in Wu Sangui was just a temporary emergency, and it was done by Dourgen!

Wang Yongji, governor of Hebei and Liao, sent Lieutenant Wu Sangui to borrow soldiers from the Qing State, asking them to fight with Ning Guan fighters from north to south, from west to east, and the peasant army at the Great Wall of xifengkou. However, Wu Sangui, eager for success, sent troops into the customs to jointly attack. Since then, from Shanhaiguan to Beijing, the peasant army has discarded countless grains, provisions and beautiful women (ancient beautiful women are often regarded as trophies). It was in the process of harvesting booty that Wu Sangui got to know Chen Yuanyuan, and Wu Sangui betrayed the Ming Dynasty only for personal benefit. Wu Sangui was the king at that time, and he was armed to the teeth. During the reign of Kangxi, the imperial court was afraid of the military power in Wu Sangui's hands and ordered to cut the vassal.