After two days and two nights of rapid marching, the Wulin coalition army entered Fengrun.

Qin Shuhuai's purpose was to attack Yongping directly and annihilate the Jiannu troops stationed in Yongping. According to the intelligence, Yongping is currently garrisoned with 8,000 Tartar soldiers, and it should not be a problem for more than 60,000 martial arts coalition troops to take Yongping.

And after winning Yongping, he will pounce on Qian'an again.

His purpose was very clear, that is, to determine that the 20,000 people who had attacked An'an and Yongping were for the purpose of collecting grain! Since the Tartars were short of food, he naturally wanted to interrupt their food supply!

If Huang Taiji ran out of food, he would naturally no longer be able to besiege Zunhua City! As for Yuan Chonghuan's lack of food, Qin Shuhuai believed that Zunhua was a big city, and even if there was no shortage of food, it would be no problem to collect and collect for another seven or eight days! If Yuan Chonghuan didn't even have this ability, then he would have studied the tactics of defending the city for so many years.

Moreover, after recapturing Qian'an and Yongping, he could threaten the 30,000 Jiannu army stationed near the Santun camp, which can be described as killing two birds with one stone!

But he didn't know that at this time, Huang Taiji, under the advice of his adviser Fan Wencheng, was gearing up to start a big battle to break the deadlock.

On the night of July 25 in the second year of Chongzhen, Haoge, the son of Huang Taiji, and the general Azige led an army of 20,000 and quietly rushed from Zunhua to the Santun camp.

At this time, the Santun camp was jointly guarded by Zu Dashou, the general of the Guanning Army, and Ma Shilong, the general of the Santun battalion. Because Yuan Chonghuan had taken over the defense of Jizhen with full authority, Zu Dashou led 10,000 Guanning troops and 10,000 Datong troops to Santun Camp, and then took over Santun Camp with Yuan Chonghuan's warrant.

Although Ma Shilong felt uncomfortable, he still focused on the overall situation and handed over the command.

As an important military town, Santun Camp has been expanded many times since Qi Jiguang. However, in the later stages, due to financial constraints, many expansion plans were discontinued. The current Santun camp wall is ten meters high and square in shape, but each of the four walls is about two miles long (about 800 meters). The city is not large, but it is strong.

After Zu Dashou took over the Santun camp, he left 45,000 soldiers and horses in the city, and the other 25,000 soldiers and horses were led by Ma Shilong and stationed on Jingzhong Mountain, which was only five miles away from the city, so as to facilitate the internal and external correspondence.

In the face of the 30,000 Tartar army stationed near the Santun camp, Zu Dashou did not have much to worry about, now the Santun camp has enough food and grass, and the armament and gunpowder are full, he thinks that if the 30,000 Tartar soldiers want to capture the Santun camp, it will be difficult to reach the sky!

But even so, as an experienced general, he still made ample preparations and did not let go of every detail of the defense. Moreover, under his leadership, the morale of the soldiers in the city was high.

It was in this state that at dawn on the 26th, the Santun camp was fiercely attacked by the 30,000 army of Jiannu!

The 30,000 left flank army led by Zilharang and Dolgon simultaneously launched an attack from the east, south, west, and north of the Santun camp! Since the wall of the Santun camp was only 800 meters, they took 800 people as an echelon and 10 echelons as a round, and the cycle went on and on, and they launched a non-stop offensive without stopping!

Compared to the last time they built slaves into the wall, this time they were more prepared. This is reflected in the abundance of siege tools they made, as well as a better understanding of the Ming army's way of defending the city.

They also followed the example of the Ming army and made a large number of armor chariots, archer platforms, and even fire oil guns. On the high platform of thirteen or fourteen meters, there were not only a dozen archers, but also one or two fire oil gun operators. The oil gun they use is not a simple bamboo tube, but a tool called a "water dragon", which is similar to the water presses used by rural villagers to get water from wells, that is, the water is placed in a large bucket, and then the water is pumped out and sprayed out by a lever and pressed. However, they had fire oil in their barrels.

After the fire oil was sprayed on the city wall, the archers immediately replaced the shoulders of the ignition, and when the arrow was shot, the city immediately ignited, and the dense Ming soldiers immediately fell into the raging fire, they rolled around, wailed, and even "fire men" jumped off the city wall, while the Tartar soldiers laughed.

When the Ming guards saw this, they immediately ordered all the archers to change into rockets and shoot at the high platform with all their might! The arrows with fire immediately rained down on the high platform of the Tartar archers, which were originally made of wood and were flammable. However, if there is no accelerant, it is not easy to ignite it with rockets alone. However, the Tartars stored a large amount of fire oil on the high platform, and in the process of spraying, it was inevitable that a lot of fire oil would be splashed and sprinkled on the high platform.

In this way, it will soon be the turn of the Tartar soldiers to taste the bitter fruit!

After several rounds of rocket salvos, the Tartar archers lost nearly half of their high platforms, and one after another the Tartar soldiers fell from the high platform with raging fire, like a fireball falling to the ground, which was extremely spectacular!

Now, it was the turn of the Ming soldiers to laugh loudly!

However, as the Ming archers shifted their targets, the pressure on the Tartars attacking the city on the ground suddenly decreased, and they quickly climbed the city wall along the ladder.

The first to climb the city were mostly the Tartar soldiers of Bayara. These soldiers are all athletic, and they wear three layers of thick armor, and they are extremely strong in combat. In this southern expedition, Huang Taiji brought out all the only 3,000 Bayala soldiers in the country!

Under the fierce attack, several small sections of the city wall of the official army were lost! However, most of the Guanning troops on the city wall were very knowledgeable about defending the city, and although they lost several sections of the city wall, they still controlled the situation and did not let the lost area further expand.

The two sides are in a stalemate.

Zu Dashou commanded Ruoding, while continuing to add troops to the city wall, while counting the time, patiently waiting for Ma Shilong to come to help!

Ma Shilong was on Jingzhong Mountain, five miles south of the city, and he didn't need to send someone to report at all, he could see the Tartars attacking the city.

According to the agreement, when the Tartars attacked the city, Ma Shilong immediately led his troops to the city to attack the Tartar camp, and at the same time, Zu Dashou would also send cavalry in the city to help, relying on the artillery fire, fire guns and arrows at the head of the city, which was enough to break the Tartar offensive.

On Jingzhong Mountain, Ma Shilong naturally saw the beacon fire outside the city and the tide-like Tartar soldiers.

Without the slightest hesitation, he immediately ordered fifteen thousand men and horses and personally led the army to rush down the mountain. The remaining 10,000 horses remained in the mountains. Jingzhong Mountain has been built into a cottage that is easy to defend and difficult to attack, and the Santun camp is a horn to each other, so as long as Ma Shilong disrupts the attack of the Tartars, he does not have to enter the city, he only needs to retreat to Jingzhong Mountain, so the mountain naturally has to leave people to defend.

Ma Shilong divided the men and horses into two groups, one led by himself to rescue the south gate, and the other led by the deputy general Wang Shou'an, who went to the east gate!

After the army descended the mountain, it immediately drove to the north and south gates according to the established route.

Before setting out, Ma Shilong was at the top of the mountain, and through the misty sky, he had already observed the attacking Tartar soldiers. It was seen that all 30,000 people were gathered around the Santun camp, so there was no worry about an ambush.

The five-mile journey was short, and it was expected that the army would arrive in less than a quarter of an hour.

As they marched quickly along the wide dirt road, and were only two miles away from the southern wall of the Santun camp in the forward camp, suddenly there was a loud shout of killing all around, and countless Tartar soldiers poured out of the grass, the foot of the mountain, and the woods!

In addition to these, from farther away, a large number of Tartar cavalry came to kill!

Ma Shilong didn't understand where these Tartar soldiers came from!

The only thing he was sure of was that he had been ambushed!