The letter that Wu Sangui saw was written by Zheng Xunrui.

Zheng Xunrui is not an angry youth, after nearly 20 years, he has experienced too many ups and downs, his heart is filled with the world, is the future of the Han nation, although the history of Wu Sangui, full of too many controversies, almost one-sided criticism, but that is the evaluation made by later generations, and at this moment Zheng Xunrui, in the midst of history, he must make every effort to minimize the loss of the Ming Dynasty.

When Zheng Xunrui wrote a letter to Wu Sangui, He Renlong and Zuo Liangyu came to defect with a pitiful number of sergeants.

He Renlong and Zuo Liangyu are both the chief soldiers of the Ming Dynasty, and the two people in history are also worthy of the word bravery, but before and after the collapse of the Ming Dynasty, one was beheaded by Yang Sichang, and the other usurped power, and let his soldiers do whatever they wanted.

At this time, the two came to defect together.

Zheng Xunrui accepted the two without hesitation, but the official position given to them was not high, the guerrilla general of the Zheng family's army.

Zuo Liangyu and He Renlong didn't let go of a fart, and they happily took office, they knew the courage of the Zheng Jiajun, and they were able to become guerrilla generals when they entered the Zheng Jiajun, and they were content.

Although Huang Degong, who has the same identity as them, was named the general of the Zheng family's army, tens of thousands of people under his command joined the Zheng family's army, but the two of them entered the Zheng family's army empty-handed.

Zheng Xunrui decided to fight for Wu Sangui.

When negotiating with Yang Tingshu and others, everyone also praised this decision, especially Wen Zhenheng, who agreed very much, thinking that if he won Wu Sangui, he would be able to stabilize the defense line of Shanhaiguan and prevent the Houjin Tartars from entering the pass.

However, Zheng Xunrui does not have this opinion. He believes that Wu Sangui can give up Shanhaiguan at a critical moment to save his own life.

Zheng Xunrui believes that Wu Sangui's situation is very embarrassing and dangerous, with Li Zicheng's Dashun Army in front and the Eight Banners Army in the back. Wu Sangui, who was caught in Shanhaiguan, is actually the weakest party, and neither side can compete head-on, if it is forcibly killed and desperately resisted to the end, it will be the end of defeat and death, or Wu Sangui will take refuge in one side to fight the other side.

History is such a story, after Wu Sangui was unable to resist the attack of the Dashun army. chose to open the Shanhai Pass and defect to the Eight Banners Army, so that the Eight Banners Army led by Dolgon defeated the Dashun Army.

Zheng Xunrui knows very well that at this time, asking Wu Sangui to firmly hold Shanhaiguan is undoubtedly to send him to death, and only by letting Wu Sangui give up Shanhaiguan at a critical moment and lead the sergeants under his command to evacuate is the best choice.

News from the dark line in the capital. Li Zicheng captured Wu Xiang and his family, and Liu Zongmin forcibly took Chen Yuanyuan away.

There is no longer the slightest possibility of reconciliation between Wu Sangui and Li Zicheng.

So at this time. Zheng Xunrui's letter was sent to Shanhaiguan and Wu Sangui in a special way, which made Wu Sangui fall into a long period of thought.

Zheng Xunrui was unwilling to surrender Wu Sangui to the Eight Banners Army, so he asked Wu Sangui to withdraw and let the Dashun Army and the Eight Banners Army fight against each other. Because this is an inevitable fight, Li Zicheng occupies the capital and is unwilling to take the initiative to withdraw, and Dolgon is even more jealous of the capital and wants to occupy the capital.

This left no room for reconciliation between the Eight Banners Army and the Dashun Army.

Of course, Zheng Xunrui also knows. Asking Wu Sangui to evacuate Shanhaiguan without any fighting is also not possible, Wu Sangui must evacuate Shanhaiguan under the condition that he cannot resist.

Zheng Xunrui has done his best, whether he can succeed or not depends on Wu Sangui's choice, if Wu Sangui still decides to surrender to the Eight Banners Army, then he has no choice, and finally leads the Zheng family army to destroy Wu Sangui together.

When Zheng Xunrui finished writing the letter, he was very confident, he thought that Wu Sangui would handle it according to his requirements, after all, Wu Sangui in history surrendered to the Eight Banners Army without a choice, if he didn't surrender at that time, it would be a dead end. At that time, Wu Sangui had no third-party power to take refuge in.

Try your best to see the will of heaven, of course, Zheng Xunrui has absolute confidence, no matter how great the changes in the north, and no matter how much preparation Li Zicheng and Huang Taiji have made, the final victory belongs to him Zheng Xunrui and Zheng Jiajun.

Wu Sangui is indeed caught in a contradiction.

After receiving Zheng Xunrui's letter, he didn't react for a while, and after reading the letter twice in a row, he suppressed the shock in his heart.

In the face of the attack of the Dashun army, this is a certain thing, Wu Sangui will not retreat, there is still a trace of fantasy in his heart, maybe this battle defeated the Dashun army, Li Zicheng will consider releasing his parents and family, but if he does not resist and evacuates Shanhaiguan, then his parents and family will definitely not survive.

Zheng Xunrui's letter pointed out a path for Wu Sangui, that is, to defect to Zheng Jiajun.

This should be the best option.

When he stood up, Wu Sangui had already made up his mind, he locked himself in the room alone, wrote a letter in detail, and ordered the soldiers around him to send the letter to Dezhou, Shandong, and hand it over to Zheng Jiajun.

Two days passed, and a shocking news came to Wu Sangui.

His father Wu Xiang and his mother, along with more than a dozen family members, were all killed, and Liu Zongmin personally led the Dashun army and marched in the direction of Shanhaiguan.

This news made Wu Sangui feel like falling into an ice cave.

Wu Sangui was completely angry, his parents and family were killed, and his concubine Chen Yuanyuan was snatched away.

Wu Sangui couldn't help it, he ordered an army of 100,000 to go to a stone, and only more than 20,000 people remained in Shanhaiguan to garrison.

Wu Sangui is out this time, and he wants to fight to the death with Liu Zongmin.

When the army set off from Shanhaiguan, Wu Sangui suddenly thought of a letter sent to Zheng Xunrui.

During the march, Wu Sangui gave a number of orders to several major officers under his command, and as for what these orders were, only Wu Sangui himself knew.

Dolgon, stationed in Ningyuan, discovered an anomaly.

He sent a large number of personnel to the vicinity of Shanhaiguan every day to observe and obtain information.

Huang Taiji's meaning is very clear, every day to report the situation in Shanhaiguan and Beizhili, the Eight Banners Army should not participate in the fight for the time being, and wait and see how the situation changes.

Dolgon also wrote a letter to Wu Sangui, the chief soldier stationed at Shanhaiguan, but everything was lost.

Dolgon's biggest concern was that Wu Sangui would return to Li Zicheng, so that the next expedition of the Eight Banners Army would become difficult, and it would be unwise to storm Shanhaiguan, so he could only bypass Shanhaiguan and enter Beizhili to fight.

Dolgon looked down on the current Dashun army at all, the original rogue, and he thought that the Dashun army did not have much combat effectiveness.

However, Dolgon did not dare to underestimate the strength of the Dashun army, the people were close to a million troops, and he only had 150,000 people under his command, if he fell into the encirclement of a million troops, it would definitely be more than lucky, and you would not be able to resist the tactics of a large number of people.

If it was according to Dolgon's temper, he would have led the army a long time ago, bypassed the Shanhaiguan Pass, and entered the North Zhili, but he still had to obey the arrangement of Huang Taiji, and Huang Taiji's consideration was far-reaching, this opportunity was rare, if the Eight Banners Army could take the Shanhaiguan in one fell swoop, then all the obstacles to entering the Central Plains would have been eliminated, and the Eight Banners Army would no longer have to worry about the situation of being attacked by the enemy, and they would be at ease and bold in the Central Plains.

The situation that Dolgon is most willing to see is that Wu Sangui refused to surrender to the Dashun army, and as a result, the two sides fought at Shanhaiguan, so that the Eight Banners Army had great hope, and could take advantage of the two sides to fight and take Shanhaiguan, and no matter which side won the victory, the Eight Banners Army could easily clean up the other party.

The scout suddenly came to report, saying that there was a large number of sergeants in Shanhaiguan, and it seemed that they had left Shanhaiguan and marched in other directions, and the number of Ming troops stationed in Shanhaiguan should not be much.

Dorgon was overjoyed to hear the scout's report, and he held back his emotions and ordered the scout to investigate again, and to be sure to detect as accurate information as possible.

Two days later, the scout came again to report that there had indeed been a transfer of troops at Shanhaiguan, and that the number of Ming troops guarding Shanhaiguan had been greatly reduced.

Dolgon was overjoyed, and the best he had scheduled appeared, and Wu Sangui and the Dashun army were going to fight.

Dolgon quickly issued an order, leaving 50,000 men to guard the cities of Ningyuan and Jinzhou, and the remaining 100,000 troops marching in the direction of Shanhaiguan, marching as much as possible in the morning and evening to avoid exposing the army too early.

Shenyang, the emperor Taiji, who received Dolgon's reward, was even more excited.

Huang Taiji immediately summoned the Manchu nobles, as well as Fan Wencheng, Geng Zhongming, Hong Chengchou and others.

Huang Taiji decided to personally conquer, he will lead the full Eight Banners of the Yellow Banner and the Yellow Banner of 20,000 people, rushed to Liaodong, Shenyang all matters, by the Prince Zheng Jierharang temporarily responsible for handling, Prince Li Daishan and Prince Su Haoge assisted, Prince Yu Duoduo led part of the Eight Banners Army to Gaizhou, responsible for the stability of southern Liaoning, to prevent the Zheng army from launching a surprise attack, Wuying County King Azig, Ying County King Adali, Anping Belle Dudu and other follow-up expedition, Fan Wencheng, Geng Zhongming and Hong Chengchou and others also followed.

Huang Taiji made this decision, which made the Manchu nobles very excited, they seemed to see the hope of the Great Qing Kingdom to enter the Central Plains, and after so many years of hard work, it was time for the Manchus to raise their eyebrows.

In early April, Huang Taiji personally led a large army from Shenyang to Liaodong.

Dorgon, having heard the news, ordered the army to wait in place.

In mid-April, Huang Taiji rushed to Liaodong and met Dolgon, Abatai and others who were waiting.

Huang Taiji completely agreed with Dolgon's arrangement, and nearly 200,000 people of the Eight Banners Army continued to march in the direction of Shanhaiguan.

At this time, Wu Sangui had no time to take care of Shanhaiguan, and the Dashun army was about to reach a stone. (To be continued.) )