Kong Youde concentrated his troops to defend the Pyongyang defense line, but he was afraid that his troops would be insufficient, so he did not divide his troops to defend the Quartet at all.

With the exception of the Pyongyang defensive line, the defenders in other areas were actually pretending.

The main task of the limited number of Qing troops was to manage Aha for production, and there were even no garrisons in some cities.

In the face of the attack of the "Red Banner Army", the vast majority of the defenders dispersed in a hurry, and Ahadu was happy to return to the Ming Dynasty.

This is not surprising, Jiannu was rampant, never treated the slaves as human beings, treated the Han Aha like this, and treated the Goryeo slaves even more cruelly.

The "Red Banner Army" treated Aha who surrendered kindly, and at least gave them two meals until they were full, and basically did not beat or scold.

In this way, it directly led to thousands of Aha willingly serving the "Red Banner Army", and too much heavy physical work was undertaken by them.

On the same day that the Yalu River Front took Yizhou, it continued to attack the city in the north, and at the same time, under the command of Shen Ming, Yu Fei and other generals, the Marine Corps of the Navy Division had sailed on a flat-bottomed inland sailing boat until it was difficult to pass, and went ashore to continue north.

The task of the 20,000 or so Marine Corps was to cut off all the roads that could be found in the east.

Predicting the route of Duoduo's retreat, the Manchu and Mongolian cavalry who had retreated here in a hurry would need to break through the area garrisoned by a battalion of marines in the Marines, and it would not be possible to do so.

It was not that the Marines were possessed by the Martial Gods, but that the Manchurian cavalry could not have the offensive equipment and artillery, and it was no different from suicide to attack under the blows of the Furlong machine small cannon and two or three thousand self-generated guns and Mini guns.

With the deliberate sabotage of the "Red Banner Army" that had been reconnoitred in advance, it only took half a day's work for the sappers to select a few bombing points at prominent places and collapse a section of the mountain road.

If you want to dredge this section of the road for another month or two, it is very likely that you will be under the command of skilled engineers, otherwise you will not only fail to improve efficiency, but also face too many casualties.

Most of the defenders left in Pyongyang came from the Tenglai rebels, and the Goryeo soldiers also followed him to kill people and set fires for three or four years, and there were countless bloody cases in the hands of these people.

Kong Youde knows how to defend the city, and knows that the biggest hidden danger is internal mutiny, water and food shortage.

There were only 60,000 soldiers and civilians left in Pyongyang, but 50,000 soldiers had combat effectiveness, and food could last for a year.

There were more than 100,000 soldiers and civilians crowded into Pyongyang's outer defense line, and these were actually people who Kong Youde did not trust and was ready to abandon, driving them out of the city and not even giving them a grain of food.

Of course, Jiang Xin will not be trusted, and he has been tasked with guarding a section of the trench west of the city with thousands of soldiers and civilians.

And Zhou Hongmo, Yang Huazheng and other generals in Shengjing were allowed by Kong Youde to enter Pyongyang to guard the city with their families and descendants.

Seeing that Kong Youde withdrew and simply did not even leave the family members who supervised the war, Jiang Xin slandered in his heart, he thought that there was no chance of victory if the resistance had come to this point, so why not surrender the city and gamble on the extrajudicial mercy of the captured general!

As soon as the "Red Banner Army" appeared in Jiannu and Tatar, they ran away, and King Gongshun retreated into Pyongyang City, how could the soldiers and civilians on the defense line outside the city still be willing to be cannon fodder? Soon Jiang Xin had dozens of generals around him who had been in contact.

Raising your hand to surrender is the only way, and it seems that there is no hope for a good thing that I can still get some combat exploits in the battle, because even if there are generals in the second line of defense who are unwilling to surrender, they know that the general trend has gone at this time.

It is impossible for them to stop the trend of the army to surrender en masse, and even if a few generals have broken their brains and want to resist stubbornly, it is impossible for their subordinates to follow.

Jiang Xin sent Dou Kuai to run with thirty people to the direction of Kaesong to find the "Red Banner Army", but there was no way that they didn't even have a mule here, and all the big animals were led into Pyongyang City by Kong Youde's family.

The last time he was waiting for surrender in the trench net outside Seoul, Jiang Xin saw the artillery fire, and he still has palpitations, the cannon is not long-sighted, wouldn't it be too wronged if he was injured by mistake?

He told Dou Kuai that he must make it clear when he saw the "Red Banner Army" that there was no resistance outside Pyongyang, that all the soldiers and civilians were waiting to surrender, and that the "Red Banner Army" must not continue to use artillery fire to open the way.

Huang Han, who led the army to attack and advance, received two pieces of news, one good and one bad.

The good news was that Jiang Xin sent Dou Kuai to bring people to deliver it, and he learned that the outskirts of Pyongyang were about to fall without a fight, and that more than 100,000 soldiers and civilians would be accepted to surrender at that time, and they would also have to provide rations to these 100,000 people.

Jiang Xin also reported that Kong Youde is now stationed in Pyongyang City, and Duoduo has left Pyongyang to go north, and now most of the horses in the Pyongyang defense line have been taken away by Duoduo, and there are less than 100 horses in Pyongyang City.

Whether Duoduo can run away depends on whether Song Pengfei, Sun Chuanting, Chen Qiyu and others have painstakingly arranged the big net for half a year is effective.

It is certain that Kong Youde is a cooked duck and can't fly, because even if Kong Youde has no less than seven or eight hundred family members, and there will be no less than three thousand descendants, and then the eggs, where will most of them run without war horses?

With less than 100 cavalry to break through the siege, it is possible that all 100 generals of the "Red Banner Army" will be killed.

When the cavalry storms the whole infantry formation, the combat effectiveness is not counted as one.

With the same combat effectiveness, the infantry did not have time to build strong fortifications when they encountered the cavalry in the wilderness.

Three thousand against three thousand, the infantry of the "Red Banner Army" will definitely be crushed, and in the end it is possible that all of them will be killed, and the enemy's casualties should be around a thousand.

One thousand against one thousand, the outcome is difficult to predict, even if the "Red Banner Army" suffers defeat, it can be expected that the enemy's battle losses will exceed seventy percent.

One hundred against hundred, the infantry of the "Red Banner Army" is fully capable of winning.

All in all, the cavalry shock only has a single-shot front-loading rifle infantry formation, and in the case that the opponent does not have the means to effectively curb the speed of the cavalry, the larger the corps fights, the more the cavalry can win, and the winning side is the hot weapon infantry.

The bad news was that the six-hundred-mile expedited ship was delivered by a day and night voyage.

On 25 July, Zilharang and Azig led 120,000 soldiers of the Eight Banners and 450,000 Mongolian light cavalry from foreign vassals to enter Yansui Town.

Hong Chengchou, the governor of the three sides of Shaanxi, was playing hide and seek in the mountainous areas of southern Hanzhong at this time with the rogues who had once again been reduced to pieces, and the troops at the border passes were even more insufficient, resulting in the Manchu and Mongolian coalition forces under seven or eight cities and fortresses, and tens of thousands of soldiers and civilians were killed or wounded.

In fact, this time Jiannu only dispatched 15,000 regular troops, because the Manchu Qing Dynasty called for the great smelting of steel in response to Emperor Chongde's call for strong labor, the better, so most of the armored people did not bring clothed slaves with the army.

Therefore, this time Jiannu sent troops with the smallest proportion of minions, with a total of only 5,000 people.