The narrow area of ​​the Anshi city gate that was blown up has become the focus of repeated competition between the Tang army and Goguryeo. Even Li Shimin in the rear could not sit still. He immediately sent Li Daozong to lead an army to replace the already exhausted army of Cheng Yaojin. Although this made Cheng Yaojin very dissatisfied, he knew that his soldiers could not hold on anymore, so he finally retreated in the end.

However, although Li Daozong's army was full of energy and tried his best, and in the end even the gunpowder was thrown at the gap full of Goguryeo people as if they were not allowed to pay, the Goguryeo people in the city seemed crazy and refused to give in any case. Even the city lord Yang Wanchun stood in the gap to supervise the battle, which further stimulated the morale of Goguryeo people. In the end, they fought hard until the second half of the night, but still failed to make any substantial progress.

"Your Majesty, it's too dark now, and the siege is not good for us. Moreover, the terrain of the explosion gap is narrow, and only a small amount of troops can be used at one time, so we can't exert our advantages at all. The Goguryeo people are extremely tenacious. I don't think there will be any result if they continue to fight, so let's withdraw our troops!" Li Ji said at this time and suggested to Li Shimin.

"No, we fought for three days and finally opened a gap. If we retreated at this time, we would only give the other party a breathing time. And now it is almost dawn. As long as we persist, we can try harder after dawn, we can definitely capture the city in one fell swoop!" Cheng Yaojin said in dissatisfaction at this time. After he was replaced just now, he refused to go back to rest. His eyes were staring at the situation on the battlefield, as if he wanted to rush up at any time.

"Zhijie, now is not the time to act voluntarily. After a day and night of siege, our aura has been lost. Instead, the Goguryeo people in the city have already aroused their ambitions. If they continue to fight like this, they will only increase casualties. So let's take it down and make plans!" As soon as Yao Jin finished speaking, Li Shimin suddenly spoke.

Although Li Shimin has not led troops for many years, as a commander who has experienced many battles, he still has a lot of experience on the battlefield. At this time, he also saw that there would be no result if he continued to fight. This and Li Ji's views are completely consistent.

"But Your Majesty..." Cheng Yaojin still didn't want to withdraw his troops at this time. After all, he had said that he had conquered Anshi City in three days, but now three days have passed. In these three days, he has also spent a lot of manpower and material resources, and he has consumed countless efforts. He even used firearms. If he retreated like this, how could he be willing?

Before Cheng Yaojin finished speaking, Li Shimin interrupted him and said, "Zhijie, I didn't expect Anshicheng to be so difficult to fight before, so don't worry too much about it before, let's reconsider it!"

Hearing that Li Shimin had to sigh helplessly, Cheng Yaojin had to sigh helplessly, and then Li Shimin ordered the retreat. After the army led by Li Daozong launched the last wave of attacks, but still failed to break through the Goguryeo people's defense line, they finally slowly retreated. The Goguryeo people on the city found that the Tang army would no longer attack, and immediately made a cheer like a tsunami. Being able to repel the Tang army's first real attack also greatly increased their confidence.

In contrast, the Tang army was depressed. After annihilated Gao Yanshou's 150,000 troops, the whole army thought that they could advance directly into Pyongyang City. Even an ordinary pawn did not take Anshi City seriously. However, they did not expect that it was this inconspicuous Anshi City that blocked the attack of their army. Later, even Li Daozong's reinforcements went up, but they still returned in vain, which cast a shadow on everyone's heart.

However, although the attack failed, Li Shimin did not blame anyone. In fact, all of them had to bear certain responsibility for the failure of the siege, which was to underestimate the enemy too much. Although Yao Jin underestimated the enemy, he also made detailed plans in advance. In the end, even the city wall was blown up, but he still failed to break through Anshi City, which was enough to show the opponent's tenacity.

As the Tang army retreated, Anshicheng immediately began to repair the city wall. By the afternoon of the next day, the section of the city wall that was blown up was blocked by bricks and stones. There were still many dead bodies that had not been cleaned up. The bricks and stones above were pressed out, and black and red blood flowed out, which made this simple city wall a little more tragic.

After returning to the military camp, Li Shimin ordered Cheng Yaojin and Li Daozong's army to rest for two days, and then summoned the generals to discuss matters with the ministers. However, Cheng Yaojin was the first to stand up and said: "I underestimate the enemy too much, please punish him!"

"You should not blame yourself for your own faults, and you can't blame you for this incident. And now, the most important thing for us is to discuss ways to break through Anshi City. Do you have any good suggestions?" Li Shimin first comforted Cheng Yaojin, and then asked again.

As soon as Li Shimin finished speaking, Cheng Yaojin said again: "Your Majesty, although my attack was not good before, I later used gunpowder to blow up the opponent's city gate, which forced the opponent to give up the advantage of the city wall and fight hard with us at the gap. At that time, I was thinking that if I exploded more walls and collapsed a few armies at that time, it would be difficult for Anshicheng to attack together!"

After hearing Cheng Yaojin's suggestion, Li Shimin also felt it was very feasible, but Li Ji said at this time: "Your Majesty, General Cheng's suggestion is very feasible. However, after Anshicheng suffered this loss, he would definitely be prepared. At that time, if we want to send gunpowder to the other party's wall, we may have to pay some price!"

"This is a problem. If you want to blow up the city wall, you must use a large number of siege tubes, and it cannot be simply stacked under the city wall. Instead, you need to dig holes in the city wall and put the siege tubes in to exert your maximum power. Goguryeo in Anshi City may not let us accomplish these things so easily." Li Xiu nodded thoughtfully when he heard Li Ji's words.

"Although it is a bit difficult, it is also a good idea. It only costs some money and consumes a lot of gunpowder. However, if there is really no other way, I can only try this method." Li Shimin hesitated for a moment and spoke again.
Chapter completed!