On April 23, the Dashun army failed to seize the pass due to a day and night of attacking the fortifications, but changed to a field battle, and invested all its troops from Jiaoshan to the Bohai Sea, and set up a long snake formation to form a decisive battle posture. Dolgon took Wu Sangui's army as the right flank to meet the battle, and the heavy troops lined up in the weak place at the end of the Dashun army on the Bohai coast, waiting for the opportunity to attack, and warned all the troops not to advance in a hurry. The Dashun army did not know the intentions of the Qing army, but still pressed on Wu Sangui's army according to the original plan, and the flag waved left and right, rushing back and forth. Wu Sangui resisted stubbornly because of the pressure of the Qing army.

At this time, the strong wind suddenly rose, the dust covered the sky, which was not conducive to the Dashun army who was not familiar with the geography of Shanhaiguan, the two sides started hand-to-hand combat, the Dashun army ignored the casualties, surrounded the Wu Sangui troops, and fought until noon, both sides were exhausted, and the losses were very numerous. Dolgon saw that the time had come, so he ordered Azig and Duoduo to lead 20,000 fine horsemen each, and took advantage of the momentum to rush straight to the Dashun army, the horses galloped, the arrows flew like locusts, the wind gradually stopped, the tired Dashun army saw the Qing army suddenly arrived, caught off guard, the formation gradually became chaotic, and the casualties were heavy, Li Zicheng's Dashun army was defeated, Liu Zongmin was wounded by an arrow, and the Dashun army died tens of thousands.

The 200,000 people of the Great Shun Army were defeated in this way, and the biggest winner of this battle was undoubtedly Dolgon, the elite of the Great Shun Army was completely destroyed, and Wu Sangui's soldiers and horses were also lost, but his own losses were very small, and the two opponents were solved at once at a very small cost, and the forces of the Great Qing Dynasty were finally advanced to the pass again.

"Wu Sangui, this time you have made a great contribution! I will not treat you badly, and I will show you to the court as the king of Pingxi to reward your loyalty! ”

In the face of Dolgon's affection, Wu Sangui can't say it, full of bitterness, what loyalty, isn't it all forced by him Dolgon, otherwise he Wu Sangui will bow down in front of him Dolgon, the winner and the loser Kou, he can only accept his fate, this battle, Wu Sangui's headquarters lost more than half of the soldiers and horses, all of this is naturally given by Dolgon, if he complains, Wu Sangui can't wait to bite Dolgon to death, but in this situation, he is already under the roof, so he has to bow his head.

"Thank you, Lord Regent!"

"Wu Sangui, since you have surrendered to my Great Qing Dynasty, you should follow the rules of my Great Qing Dynasty, and you will be praised in the future! There is also a shaving head and easy to wear, this is all what we have discussed before, Shanhaiguan will be guarded by my Eight Banners of the Qing Dynasty, you take the soldiers and horses to continue to pursue Li Zicheng, I believe you are also willing to go to take revenge! ”

At this moment, Dolgon is a domineering look, and now Wu Sangui is panicking like a lost dog, he is not worried that Wu Sangui dares to have any other ideas, because he Wu Sangui has no choice, except to hold Daqing's legs tightly, can he have any other way out? No, there is no need to mention it in the Dashun army, they are already a blood feud of life and death, and the remnants of the Ming Dynasty, it is needless to say, because Wu Sangui put them in the pass, those scholars will not let Wu Sangui go, he has no choice but to Daqing.

"Huh!" Wu Sangui also replied reluctantly, he also knew that he was now a dog in the Manchu Dynasty, and he had to do it if the master asked him to bite anyone.

Watching the strands of long hair that he had cultivated since childhood falling, Wu Sangui also clenched his hands, gritted his teeth and sighed helplessly: "The body is skinny, and the parents who receive it dare not destroy it, and filial piety is the beginning." Therefore, the Han people do not shave their hair or face, so as to distinguish themselves from the Hu people. Unfortunately, in the last days, it is not painful that even the remains of parents cannot be saved! ”

Hong Chengchou, who was in charge of supervising next to him, heard this, but said comfortingly: "Sangui, don't be too stubborn. Now the country can't protect it, let alone beard and hair! Dolgon is about to occupy Shanhaiguan, and you have invited it. If it weren't for the Qing army coming to help, would you have a good idea to defeat Li Zicheng and hold Shanhaiguan? ”

Wu Sangui sighed, the bitter fruit he planted could only be swallowed by himself, and said, "It's urgent, there is no other good way." I originally wanted to borrow the Qing army to defeat Li Zicheng, recapture the prince, and help him ascend to the pole and rebuild the Ming Dynasty, but now it has failed, and I have become their person, Providence! The Manchu Qing Dynasty's entry into the Central Plains is just around the corner, and Li Zicheng is afraid that he will be invincible, so he can only adapt to the situation and welcome him into the customs. ”

"The Qing Dynasty not only wanted to occupy Beijing, occupy the land north of the Yellow River, and restore the prosperity of the Jin Dynasty, but also to dominate the world. This situation, did not begin today, but began in Huang Taiji, Nurhachi cut Liaodong, the Ming Dynasty is difficult to match, after Huang Taiji succeeded to the throne, the country is flourishing, but also recruited many Ming Dynasty rebels and rebels, as much as possible preferential treatment, in order to win the hearts of the people, after more than ten years of efforts, Manchuria internal affairs are stable, the population has increased greatly, the army is strong, not only has become a strong enemy outside the Ming Dynasty, but also began to have the ambition to win the Central Plains, and also has this strength. What's more, seeing that the Ming Dynasty has fallen today, and Li Zicheng is by no means a first-class figure in Han Gaozu and Tang Taizong, how can Dolgon give up and miss the opportunity? Since ancient times, it is human nature for good birds to choose trees and perch, and virtuous ministers to choose their masters! Now that you've chosen, stop complaining about anything. The rise and fall of dynasties is related to the number of qi, and non-personnel can influence it. ”

Li Zicheng fled all the way with only more than 3,000 remaining guards, under the protection of the Qin army, galloped for half a day, after midnight, and finally arrived in Lulong City, the remnants of the Dashun army defeated will also come to Lulong one after another to converge, the scattered men and horses combined, about twenty or thirty thousand, very chaotic, embarrassed, in the past two years, he Li Zicheng He has experienced such an embarrassing defeat as if he returned to the year all of a sudden.

After Li Zicheng was stationed, he immediately sent someone to send a secret message to Niu Jinxing, ordering him to quickly prepare to defend the city and fight, and prepare for his enthronement ceremony after returning to Beijing. He also ordered Liu Zongmin to rectify the people, contain and disperse, and immediately withdraw to Beijing tomorrow.

"Please let the emperor let me go to my son's camp, I will ask him to come and surrender to the emperor quickly, and kill the Manchurians, please The emperor must believe me!" Wu Xiang was tied up and escorted to Li Zicheng, he knew that his end had come, and he hated it, how could he give birth to such a ruthless and unrighteous son, and his own biological father was not as good as a concubine beside him.

Looking at Wu Xiang, who was embarrassed like a dog in front of him, Li Zicheng sneered and said viciously: "Now that the matter is over, is it still useful to keep you?" If your son really cared so much about your father, he would have surrendered a long time ago, would he rebel, and now I want to borrow your head to let Wu Sangui know what the fate of his disloyalty and filial piety will be, and let him be scolded by the world! ”

"Ah......" Li Zicheng then fell with a knife, killed Wu Xiang with his own hands, and hung Wu Xiang's head on a high pole, hanging it on the city wall, waiting for Wu Sangui to come and see.

On April 26, Li Zicheng fled to the capital, only more than 30,000 soldiers in the department, on April 29, Li Zicheng proclaimed himself emperor in Beijing, and held an enthronement ceremony in the Wuying Palace, the next day, Li Zicheng left Beijing in the name of worshipping heaven in the suburbs, retreated to Xi'an by Shanxi and Henan roads, and burned the Forbidden City and many places in Beijing before leaving, only 42 days before and after.