Hearing Li Shimin's words, Li Yuan's pupils suddenly shrank, this was the most unbelievable thing for him, and he didn't want to believe the most.

It turned out that the gunpowder that he wanted to use as a hole card had long been under Luo Cheng's control. There is even a more powerful existence in his hands, which is used to attack Chang'an City at the moment.

There is no doubt that Luo Cheng did not show any traces of using gunpowder before, and it was suddenly exposed at this moment, in order to make a sudden attack and catch Li Yuan off guard. In fact, his goal was indeed achieved, and everyone was stunned at this moment.

The gunpowder that had just fallen on the tower was just one of them, and a series of attacks followed. The true power of gunpowder was fully revealed at this moment, causing the defenders to fall into complete panic.

Li Yuan was still a little incredulous, if only Luo Cheng had gunpowder. The question is why Luo Cheng's gunpowder is so powerful that it can still be thrown through a trebuchet and still be able to explode in the castle tower.

These questions gathered in Li Yuan's mind, almost causing him to explode directly. This time he almost collapsed, but fortunately, his heart was relatively strong, and he finally barely survived.

Shaking his head fiercely, Li Yuan put aside all the nonsense in his mind. He looked at Li Shimin again and said, "I didn't expect Luo Cheng to hide so deeply, I despised it too much. ”

"The enemy's gunpowder is so powerful that it can be directly attacked by trebuchets on top of the tower. If it continues, I'm afraid we won't be able to hold Chang'an City. Li Yuan said in a deep voice, but calmed down.

As he was talking, a piece of ammunition was thrown near Li Yuan and the others, and it exploded in an instant. The terrifying power made Li Yuan feel the same way, and those guards all injured several people because of this.

After being attacked, Li Yuan's father and son all looked extremely embarrassed, Li Shimin took a deep breath and said: "The enemy army attacked the city with gunpowder, I am afraid that it has been prepared for a long time, and it is indeed troublesome." ”

Li Shimin was very helpless, in the face of Luo Cheng's strong attack, they had no power to fight back. Regarding the use of gunpowder, Li Yuan is still very superficial, at most it is just burying mines.

But Luo Cheng is different, the threat of these dropped bombs is too great. It's just a short moment, and the defenders suffer heavy losses, and such an existence is no longer something that manpower can resist.

In today's era, the emergence of hot weapons is undoubtedly extremely aggressive. Because their power is beyond the realm of human power, it is impossible to resist it with their bodies.

Luo Cheng did not continue to send troops to attack, but kept having people bombard the city tower with ammunition. Li Shimin could think that Luo Cheng must have made a lot of preparations at this moment, so that he could be so calm.

I have to say that Luo Cheng's means of concealing the news are indeed extremely strong, and Li Yuan's father and son don't know about this stubble at all. Now it is a big loss, in this bombardment like a raging storm, completely passive.

In the midst of Li Yuan's father and son's groaning, the most important and embarrassing news came. Not only the city gate here, but also the other two places arranged catapults to start bombing, and the sound like thunder resounded in all directions.

Luo became the moment, but put a lot of effort into it, especially when it came to improving the gunpowder. Coupled with the manufacturing behind it, it took a lot of manpower and material resources, so it is natural to show its value at this moment.

Such unreasonable and indiscriminate bombardment made Li Yuan's father and son a little confused. Especially the two brothers Li Jiancheng and Li Yuanji, their minds are not as strong as Li Yuan and Li Shimin, so it is naturally difficult to accept.

The castle tower is already very dangerous, because you don't know when a bomb will fly to your side and explode. Tear people to pieces in a sudden time.

Fortunately, Li Yuan and the others retreated in time, and after they came to the city tower, there was a building to resist, and they were barely affected. But even so, the amazing sound still came and went.

The most important problem is that although evacuating the city tower can save his life, but there is no garrison at all, isn't it equivalent to giving Chang'an City to others, and there is no difference from defeat.

Maybe this is Luo Cheng's idea.

Li Yuan was naturally unwilling, but from this noise, he could already imagine the situation of the defenders. After being affected by explosives, they are either killed or injured, and they can't escape if they want to, let alone resist.

Even if you have brute strength, you can use your shield to stop the ammunition when it flies. The power generated by its instantaneous explosion is enough to cool an ordinary person directly.

On the castle tower, in addition to the sound of thunder and explosions, there is also the uninterrupted wail of the defenders. If this kind of battle continues, I am afraid that without Luo Cheng's attack, they themselves will have civil strife.

To the defenders, gunpowder was a mysterious being, its power was astonishing, and it came very suddenly. It's like a heavenly punishment, and people can't bear it at all.

In this way, when such emotions continue to accumulate, it will definitely make the soldiers resentful. vent his anger on Li Yuan, and the situation at that time will be the real embarrassment.

Li Yuan's eyebrows were already tightly condensed together, indicating that he was still entangled to the extreme. Faced with such a dilemma, he had to make a choice, and if he had to resist stubbornly, it was not the right choice.

Brother Li Jiancheng was nervous, seeing that Li Yuan was thinking about countermeasures, he didn't dare to talk nonsense, so he could only stay honestly on the sidelines. They can also distinguish the importance of life, of course, it is the small life.

Now they are staying in Chang'an City, and when Luo Cheng leads the troops to kill, I am afraid it will be a dead end. But now that they are running away, it seems that they have no way out, and they may be given seconds by a heavenly thunderbolt.

Li Shimin didn't think about it so much, he slowly took a deep breath, looked at Li Yuan and said: "The enemy army suddenly attacked with the help of gunpowder, and now the army has no heart to fight, I'm afraid Chang'an City will not be able to defend it." ”

There is no doubt that what Li Shimin said was the truth, and Li Yuan also understood these truths. Luo Cheng shattered all his preparations in one fell swoop, and there was nothing he could do about it.

After all, Luo Cheng has absolute strength, even if there is no gunpowder, he also has the opportunity to break through Chang'an City. It's just the abrupt appearance of gunpowder that pushes this time forward many times.

After pondering for a long time, even if Li Yuan was unwilling, he could only make a decision, and the amazing sounds that sounded from all sides made him more and more uneasy. Fortunately, Li Yuan had prepared a way out before, and it was not a complete desperate situation.

Luo Cheng sent troops to attack the three city walls, leaving the West Gate alone, and it is conceivable that he must set up an ambush here. But this is Yangmou, at this moment, Li Yuan can only take this road.

No matter what obstacles Luo Cheng sets up here, they must break through, otherwise there will only be a dead end. Even if the opportunity is slim, you can't just give it up.

It was Li Yuan who turned his eyes, looked at Brother Li Shimin, and said in a solemn tone: "Now we have no choice, I'm afraid this Chang'an City will not be able to defend it, so we can only evacuate here." ”