This is also the reason why Sun Hui did not rush down and set fires.

His plan was to defeat the Jin army and seize these grains and materials in his hands.

However, he also knew that the Jin army was fierce and strong, and had rich combat experience, and would never make the mistake of leaving the important land of the Mu Huogang army to the enemy like Li Gang.

At this time, the Song army led by Zhang Shuye was still far away, and it would take a few more days to reach Taiyuan City, and the reason why he appeared here in advance was to fully understand the situation in Taiyuan City and formulate the best battle plan.

Because he has the same eyesight as Hai Dongqing, although he is in the sky, he can see everything in Taiyuan City under his feet.

The Jin army may have known the news of the Song army's attack, and made preparations early, not only adding a number of fortifications in the city, but also erecting a large number of bed crossbows.

In addition to the bed crossbow, Sun Hui noticed that many of the golden soldiers were still holding some long bamboo poles in their hands, he observed carefully for a while, and found that these long bamboo poles were very strong, and there were no spear tips at both ends, and he couldn't help but think of something.

Could it be that a bamboo musket?!

Seeing that the Jin army was equipped with so many bamboo muskets, Sun Hui couldn't help but be surprised.

How could the Jin people master the craft of gunpowder and firearms so quickly?

Thinking back to what happened in history, Sun Hui quickly figured it out.

In the original history, after the Jin army conquered Tokyo, they obtained gunpowder and firearms production techniques from the captured Song craftsmen, and then improved them, and designed their own firearms and used them in war. And now because of the reason that he has changed history, there is no longer "Jing Kangsha", so there is only one possibility, that is, it was taught to the Jin people by the traitors among the Song people.

He remembered what Hu Liying had told him about the Taoist priest who had injured her with a tin can filled with gunpowder.

Although it was found that the Jin army was equipped with a large number of firearms, Sun Hui was not worried, because he also created two sophisticated firearms for the Song army.

Gunpowder blast arrows and iron-clad thunderbolts.

For him, it was not a problem at all to make a real metal tubular artillery, but he was worried that bringing the war into the age of firearms too early would bring uncontrollable consequences - after all, there were too many Song traitors like that Taoist priest, and it was easy to teach new firearms technology to the Jin people - plus the time was not very sufficient, so he only made these two firearms that were simple to make but had high combat efficiency to help the Song army recover Taiyuan.

Despite this, Sun Hui can also imagine that this battle will greatly affect the future combat mode.

Sun Hui observed for a while, just now his attention was attracted by the firearms equipped by the Jin army, and now he found that the number of the Jin army was obviously much larger than the last time Hu Liying came to reconnoitre.

But among these Jin troops, there was the banner of the Golden Emperor's Imperial Camp, which couldn't help but surprise and delight him.

He didn't expect that Emperor Jin Wanyan Wu begged to come to Taiyuan in person! And even knowing that he would come, he also showed the flag, without hiding, and seemed to be fearless.

Sun Hui thought about it carefully, and understood the purpose of Wanyan Wu begging to do this.

Jin Jun now has extremely sharp firearms, and Wanyan Wu Qimai thinks that these firearms can completely kill him, so he appears in Taiyuan with great fanfare, for fear that he will not fall into the net.

Sun Hui figured out Emperor Jin's intentions, and couldn't help but sneer.

His current defensive strength is no longer what it used to be, unless the Jin army has a Napoleonic cannon now, it can only be wishful thinking if he wants to penetrate him.

Sun Hui flew around Taiyuan City for a while, and soon found the location of the Jin Army's granary, he observed the surrounding environment of the Jin Army's granary, remembered it in his mind, and quickly thought of a preliminary battle plan.

Just as he was about to fly away, he noticed that someone in the city had spotted him, pointing at the air, and even though he had to be very tall, he was still spotted.

But at this height, even if it was discovered, the Jin people were helpless against him, even if he used a bed crossbow, it was impossible to shoot it at such a high altitude.

Sun Hui didn't want to alarm the Jin army, so he turned his head and flew in the direction where the Song army came.

When Sun Hui returned to the Song army, the sky was close to evening, the Song army had set up camp under the order of Zhang Shuye, Sun Hui came to Zhang Shuye's big tent, at this time Zhang Shuye was holding a military meeting with the generals to discuss the battle plan, Sun Hui told Zhang Shuye and the generals of the Song army in detail what he saw in Taiyuan, and drew the Jin army defense situation in Taiyuan City into a graphic for the generals to see.

Taiyuan city is originally dangerous, the city is high and the wall is thick, easy to defend and difficult to attack, and learned that the Jin Emperor arrived, the troops must be the main force of the Jin army, the total strength of the Jin army must be much more than the Song army, they all think that the first not to attack the city, lure the Jin army to fight, annihilate the main force of the Jin army in the field battle in the suburbs, and then attack the city is relatively easy to succeed.

Seeing that the morale of the generals of the Song army was obviously much higher than before, and they were not afraid of attacking a fortified city like Taiyuan, Sun Hui felt a lot more relieved.

In fact, this time the Song army led by Zhang Shuye to attack Taiyuan was different from the past, and it was trained by the elite soldiers selected from the Tokyo City Defense Force and the Qinwang Army, and the commanders of the army were in addition to Zhang Shuye's two sons Zhang Bofen and Zhang Zhongxiong, as well as Wu Ge, Jiang Xuan, He Qingyan, Chen Keli and other capable generals, as well as Sun Hui's recommendation of Gao Chong, Di Feng, Yang Huaixian, Zhang Feng, Wen Changtao, Su Jianzhong and other young rookies, it can be said that there are many talents, strong soldiers and horses, and they are extremely sharp, which is by no means comparable to the regular army of the Song Dynasty before.

Although the number of this Song army was small, only 50,000 people, it was extremely well-equipped, in addition to being equipped with the traditional long-range weapons of the Song army, such as bed crossbows and divine arm bows, it was also equipped with a large number of gunpowder explosive arrows, thunderbolts and other firearms. What is particularly important is that among the 10,000 cavalry in the Song army, there are 2,000 people, which are the Song version of the "Iron Futu" - "Iron Qilin" heavy armored cavalry carefully built by Sun Hui.

After studying the heavy cavalry tactics with Di Feng and others, Sun Hui proposed to Zhao Ji of Song Huizong to form a Song army heavy cavalry to deal with the Jin army cavalry, Zhao Ji can be said to have responded to Sun Hui's true "immortal", and immediately put it into practice, he first ordered to transfer three thousand sets of infantry armor from the royal arsenal to Sun Hui, and he was newly transformed into cavalry heavy armor, and ordered to select good horses from the forbidden army to provide Sun Hui, and spent a lot of money to buy good horses in the people. In the forbidden army, selected soldiers were handed over to Sun Hui for training, and it only took a month for the Song army's "Tiefutu" to be formed, and Zhao Ji personally named this unit "Tie Qilin" to highlight Sun Hui's creativity and merits.