The new annexed army in the river fell into chaos, and even Yang Wenan was blocked from crossing the river. In a hurry, he ordered his own soldiers to push all the siege equipment and people blocking the way into the river, and at the same time ordered the soldiers with loud voices to shout the order to retreat in unison. Under the chanting in unison, the new annex soldiers on the pontoon bridge heard it clearly, and the new annex troops who were coming from the east bank also retreated one after another, but the new annex soldiers on the west bank who had not yet crossed the river were even more panicked, and they fled in chaos, and even slashed each other in order to fight for the pontoon bridge. After the frightened Yang Wen'an crossed the river, he ordered people to maintain the order of crossing the bridge, and he fled straight to the rear with his own soldiers, far away from the range of artillery. Panic spreads like a contagion, and the new annex soldiers who were left behind to take on the task of blocking the main general also panicked. When the Thunderbolts began to set up artillery on the west bank and outflanked them from both sides, the remaining soldiers of the new annexed army also jumped off the river embankment and fled. The armor of the Iron Man Army can't stop the artillery, and the shield obviously can't stop it, and these soldiers of the newly annexed army obviously don't have the consciousness to become cannon fodder voluntarily.

The so-called defeat is like a mountain. In the blink of an eye, most of the newly annexed troops on the west bank of the river had fled, and only more than 100 wounded soldiers could not cross the river, because the temporary pontoon bridge had collapsed. Although the river is not frozen in the middle of winter in the western Sichuan Plain, the river water is also cold and biting, and it is difficult to wade across the river. Occasionally, the wounded soldiers forced their hearts into the water, but they fell into the water because of their unsteady standing, and they trembled when they barely climbed to the shore, and their faces that had already lost blood became even paler, and the rest of the wounded soldiers were even more frightened when they saw this situation. In this era of lack of medical treatment, headache and fever are also extremely difficult for those who are healthy, and it is even more difficult for wounded soldiers who are affected by wind and cold, as if they were tortured to death by illness, so it is better to resign themselves to fate. Thinking of this, these wounded soldiers stopped struggling and simply sat on the ground.

Before the new annexes who had fled to the east bank of the river could catch their breath, the Thunderbolt shells whistled in, smashing the wooden fences of the new annexes on the banks of the river. These wooden fences worked well against the shotguns of the forts, but they could not resist the solid shells of the field artillery. As the artillery extended its fire, the new annex on the east bank of the river began to run for its life again, and did not stop until it was a few miles away from the river, still in shock. At this time, Kudu also led the cavalry from downstream, and when he saw this, he also retreated far away. He led his army downstream to try to find a shallow place to cross the river, but found that the river became wider and deeper as he went. What's more, at this moment the defense system of the Thunderbolt army has been activated, and the defense force of the fortresses along the river has increased several times. These newly added defensive forces were the backbone militia of the Perak Army, and although the number of firearms was small, it was difficult for the Mongols to cross the river if they were held in a dangerous position.

Seeing that the new annexed army had fled far away from the riverbank, Zhou Jianshen ordered people to go down to the riverbed to clean up the battlefield, and ordered people to take gunpowder bags to completely blow up the remains of the pontoon bridge. In addition to the more than 100 wounded soldiers, the dry river was also full of dead bodies, and in addition to the new annexed army, there were also knives and other weapons left everywhere. Although Yang Wen'an lost at least 500 people in this battle, the new annex army of his department still had 2,500 people, and the number of cavalry in the Kudu Department still far exceeded the reinforcements of the Thunderbolt army. The casualties of the Thunderbolt army were not small, Zhou Jianshen initially estimated the loss of more than 200 people, especially the platoon of soldiers defending the fortress was basically wiped out, and the only surviving Li Laosi was also seriously wounded. The cavalry company suffered heavy casualties, and the only 17 surviving members of the company were wounded. The only thing that was relieved was that the horses had been driven away from the battlefield, and there were still more than forty left.

Although this battle was defeated miserably, Yang Wen'an, who had traveled hundreds of miles, obviously would not retreat. The Iron Man Army was all wiped out and he went back empty-handed, how could he explain to his uncle Yang Dayuan? At that moment, Yang Wen'an ordered his subordinates to set up camp and began to cut down trees to build heavy siege equipment. After suffering a heavy loss of firearms, he took Kudu's suggestion seriously and prepared to deal with firearms with civil fortifications. Kudu suggested digging a trench to approach the river bank, building a thick earthen wall to block the shells, and then building a fortress to fight with siege weapons. In order to stabilize Yang Wen'an, Kudu also promised to let Liu Heima bring artillery to destroy the Thunderbolt army's fortifications. Listening to Kudu's words, the flame of hope in Yang Wen'an's heart burned again. Although Liu Heima's imitation artillery will not be too much, and the performance is only acceptable, but with a large number of siege equipment, it will inevitably be able to offset the firearms advantage of the Thunderbolt army. In Yang Wen'an's opinion, his own number is still far superior to the Thunderbolt army on the other side, and he is also good at siege equipment, and the advantage is still mine.

The new annex army was busy digging trenches, building walls and building siege equipment, and the Thunderbolt army on the west bank of the river did not sit idle, but built a defense system in depth with the fortress as the core. Zhou Jianshen ordered people to erect artillery positions, build earthen walls and dig trenches to protect them, and also planted mines on the possible offensive routes of the Mongolian army. The fortress was the center of the defenses, with ten guns on the walls and plenty of ammunition in the basement. Zhou Jianshen also ordered someone to pull over the only six heavy field guns in Mianzhu City and arrange them in front of the fortress. With the continuous arrival of reinforcements, the Thunderbolt army deployed within a mile of the fortress now has 1,100 regular troops and 2,000 basic militiamen, although the number is still inferior to the Mongolian army, but with the natural danger of the river, the Mongolian army has been unable to break through the defense line of the Thunderbolt army.

Both sides are preparing for the next battle. At the invitation of Liu Heima, Kublai Khan ordered the Mongol troops in central and eastern Sichuan to send troops and horses to support. In addition to Huang Dagen, the commander of the second division, who went to Mianzhu to take charge, the general staff also successively transferred reinforcements from Jiading, Yazhou, Weimao and other directions, but the strength was not much, a total of only one brigade of troops, including about 500 cavalry. On the Chengdu-Genting City-Jintang line, which is close to Hanzhou, due to the heavy garrison of Liu Heimatun and the great defensive pressure of Cao Ergou's First Division, reinforcements were not sent to Mianzhu. In order to ensure that the war was safe, under the coordination of Ouyang Xuan, the ammunition produced by the arsenal was transferred to the Mianzhu front line first. Huang Dagen patted Ouyang Xuan on the chest and assured that as long as the ammunition was guaranteed, the Mongolian army would definitely not be able to advance an inch.

During the confrontation along the river, although there were no large-scale battles between the two sides, small-scale attacks and harassment operations were quite frequent, but there was little progress. Comparatively speaking, the Thunderbolts played more conservatively, and their losses were smaller. The Mongol army, eager to attack, frequently carried out night raids and reconnaissance operations, but these operations were often unsuccessful. As the Spring Festival gradually approached, the activities of the new annexed army of Yang Wenan and other departments were much less. On a few occasions, the Mongol scouts managed to break through the defensive line, but they fell into the encirclement set up by the Perak army and were wiped out by the superior Perak cavalry. The Perak Army had 800 cavalry on the Mianzhu front, and they acted as firefighters under the direct command of Huang Dagen.

In the face of the Imperak Army's impenetrable defensive line, the Mongolian army was helpless. At present, the artillery set up by the Thunderbolt army on the bank made the new annex army dare not come within a mile of the river bank, and the fence set up was destroyed many times. Although the earthen wall built by the new annex army could withstand the shells, the wall builders suffered heavy casualties under the shotguns of the curved tiger squatting cannons. It is understandable that the Thunderbolt army did not take the initiative to take the initiative to knock down, on the one hand, there was enough food and ammunition to withstand consumption, and on the other hand, they were also waiting for the arrival of the spring season. As long as the river section can pass through the warships, it would be a fool's dream for the Mongolian army to try to get in.

The battle ended in a stalemate.