The Mongol army was desperately digging trenches that extended to the barracks, and the Banzhou army did not sit idly by, but bombarded them with light artillery from time to time, although the effect was very poor. Yang Bangxian also sent a team of men and horses to raid the Mongolian army digging trenches, and after succeeding, he quickly retreated, and did not love to fight. The purpose of this was to paralyze the Mongolian army by showing weakness on the one hand, and to attract the enemy's attention on the other hand to cover the actions of the special battalion of the 3rd Division. Zan Wanshou judged that when the trench excavation was completed, it was the time for Niu Ling and Liu Cheng to do it, so he had already dispatched a hundred soldiers of the special battalion to ambush the ship next to the dark passage. The fewer the raiders, the smaller the movement, the higher the success rate, and in addition, the dark passage of the Divine Arm City is very narrow. According to the drawings brought by Ran Zhong, the secret passage out of the Divine Arm City was not at the east gate, but under an extremely hidden and steep cliff by the river, and its hole could only accommodate one person to pass through.

Of course, Niu Xuan could guess, because of Yu Xing's defeat, Zan Wanshou would inevitably prevent himself from attacking the defenders of Shenjian City. It's just that New York knows that time is not on her side. Although he delayed the Perak troops heading to Fushun Prison, it only delayed time. The troops sent by Zan Wanshou to Fushunjian were commanded by Hou Xing and had two infantry brigades and one cavalry brigade. Because the cavalry brigade of the Third Division was not yet fully staffed and only 1,000 men, he transferred more than 200 cavalrymen from the capital barbarian division before setting out. Although the cavalry of the Mongolian army is elite, it does not have an absolute advantage over more than 1,200 cavalry with 2,000 cavalry, not to mention that the cavalry of the Thunderbolt army is not far from the infantry and can get the support of a large number of infantry. The Thunderbolt marching column was sluggish but invulnerable, and there were no flaws at all that allowed the Lost Answers to find a gap to attack. If the time drags on any longer, let this force of the Perak Army take the Fushun Prison, which will cut off the food route and even the back road of the New Zealand army.

On a rainy night after digging the trench for several days, the Mongol army really started. The reason why New Zealand chose to use the rainy day was to try to weaken the advantage of the Thunderbolts' firearms. From his experience, firearms are most afraid of rain, although rain can also weaken the power of the Mongolian army's bows and arrows. "Empiricism kills people", to say that Newland's judgment is not wrong, but he underestimated the speed of firearms update and technological iteration. In fact, as long as it is not pouring rain, Thunderbolt firearms can continue to be used in the event of rain protection, although the dud rate will increase significantly. For example, the Thunderbolt troops under the Divine Arm City, the ship's artillery was not greatly affected by the rain due to the fact that it was placed inside the cabin; The grenades, mines and musket bullets are packaged in oiled paper, and the key parts are also greased to prevent them from being soaked by rain, and because of the use of lightning mercury fire, the firing rate can be guaranteed; The real trouble is that the artillery is gunpowder, although it is made of silk into a fixed gunpowder bag, and the outside is also wrapped in a cloth soaked in grease, but it is also easy to be soaked by rain during transportation and loading.

The soldiers of the new annex army became the vanguard of the attack on the Banzhou military camp without any suspense, and in other words, cannon fodder. They sneaked to the end of the trench and then silently touched the barracks until they triggered the mines planted under the low walls of the barracks. In fact, the number of new annexes in the first attack was 1,000 people, and even if they were cautious, such a large number of personnel were extremely quiet, and they had already been discovered by the Sentinels of the Banshu Army. It's just that under Yang Bangxian's strict orders, the Banzhou army pretended not to hear the noisy footsteps in the rain, and also pretended not to hear the low sound of pain from being pierced by triangular nails, and even ignored the sound of knives and iron colliding with stones in the dark. Yang Bangxian did not rush to open fire, but ordered the whole army to lie behind the wall and wait, ready to wait for the Mongolian army to approach and then attack head-on.

The sound of mine explosions one after another was the signal for the Banshu army to open fire. A dense array of grenades flew down the low wall and smashed into the crowd of new annex soldiers, followed by a series of flickering fire, and the light artillery on the low wall opened fire. The new annex army, which was originally tiptoeing to attack, thought that he was a hunter, but unexpectedly became the prey of an ambush. Under the sudden blow of the Banzhou army, the attacking 1,000 new annexes lost a third of them in this moment, and the rest of the personnel were so frightened that they fled back one after another. However, they did not flee back to the camp as they wished, because the torches were already burning in front of the camp gate, and under the bright light stood a row of overseers with bright broadswords, and it was Niu Lin who sat on the chair in the center.

Seeing the failure of the sneak attack, he ordered his men to light torches, preparing to defeat the Thunderbolt army in one fell swoop by virtue of their numerical superiority. In fact, he also knew that there must be mines planted in front of the barracks, and as long as the mines sounded, a sneak attack would become a strong attack, but the Mongolian army did not have an effective means to deal with the grenades, so they had to send people to the mines. Before the war, a general suggested charging with a fire bull array to break the thunderbolt army's minefield. It's just that Sichuan has been war-torn for a long time, and not only has the population been greatly reduced, but there is also a shortage of large livestock such as cattle. There are a lot of cattle in the Perak military area, but they are all purchased from the Fan District and Miaojiang at a high price, and the Mongolian army went to find so many cattle there for a while. The general of the new annexed army whispered that the lack of cattle could be replaced by horses, and this proposal was immediately met with angry eyes from many Mongolian generals, and some even drew their swords on the spot. As a traditional faction in the Mongolian army, of course, Niu Ling was also opposed to this proposal, and in his opinion, the soldiers of the new annex army were comparable to valuable horses. Were the Mongols still Mongols who lost their horses?

Successive new annexes were driven to attack the Banshu army's fortifications, and they came and went like a tide under the alternating fire of artillery, grenades, and muskets, while the Banshu army's barracks stood as immovable as a reef. Most of these new annexes were killed between the three trenches and the low wall in front of the barracks, and only a few brave people climbed the low wall, but they were pierced by the Banzhou soldiers with spears, and their deaths were extremely tragic. Unmoved by the heavy casualties of the new annexed army, he ordered the axemen to kill several generals who had taken the lead in escaping. In his eyes, the new annexed army was originally cannon fodder, and its role was to consume the opponent's ammunition, and when the Banshu army ran out of ammunition, it was the time to launch a general attack. Liu Heima once told him that although firearms are quite powerful, they are really expensive, and the money spent on building a cannon alone is a huge expense, and if you add the cost of training and ammunition consumption, the money spent by the same number of firearms army even exceeds that of cavalry.

As a nomadic economy, although he had seen the prosperity of Central Asia and Han during the expedition to the east and west, and had also seized countless gold, silver, money and grain, he could not imagine the high efficiency and huge production capacity of industrial production. At present, the three arsenals of the Perak Army in Dayi, Pengzhou and Jiading, except for the iron artillery produced by the chamber milling method and the muskets and copper-shelled bullets that need to be finely processed, the production of grenades and mines has long been in excess of demand, and many of them have been sold to allies. As the most important ally of the Thunderbolt Army, the Banzhou Army naturally has as many as it wants, and in order to make up for the lack of artillery in the Banzhou Army, Zan Wanshou was also ordered by Ouyang Xuan to bring grenades and mines enough for a field division to use with the ship. Trying to consume ammunition and counteract the advantages of firearms with human lives is typical of the thinking of the agricultural era.