Outside Jian'an City, Su Wen Gaiyuan was originally in a very good mood and the battle was going very smoothly. However, when he thought about it, most of the Tang army soldiers were probably poisoned and fell to the ground.

Unexpectedly, his soldiers were almost approaching the city wall, and only sporadic arrows shot at his men and horses from the city wall.

Obviously, he succeeded in asking Mozi's people to poison him. It would be easy to capture Jian'an City today.

But what happened next made him unexpected. After loud noises were heard, the Gaoguli soldiers who launched the attack on Jian'an City fell in pieces. In just a moment, the soldiers attacking the city fell.

The number of casualties exceeds 10,000, and the number continues to increase.

This shocked Su Wengaiyuan and didn't understand what was going on.

The unknown is scary. Su Wen Gaiyuan was shocked at this moment. He thought a lot in his mind, but none of the answers could fit the current situation.

However, when artillery fire was fired from all four walls of Jian'an City, Su Wengaiyuan figured out what was going on.

Although he found the reason and it was Tang Jun's fault, he didn't know what the trick was.

When he saw that a large number of Gaoguli soldiers were frightened by this sudden scene, Su Wengaiyuan knew that it would be difficult to make any achievements in today's battle, and their morale was already low. Even if he forced the soldiers to continue attacking the city,

That would just increase casualties.

"Hateful!!! Hateful!!!"

"What the hell is going on? What's going on?"

Su Wen Gaiyuan clenched his fists and cursed, but no one could answer his questions.

The Tang army didn't even know what was going on, so how could the people of Gaoguli know?

In desperation, Su Wengaiyuan had no choice but to order the withdrawal of the troops. The Gaoguli people, who were about to capture Jian'an City with great momentum, retreated shortly after attacking the city. This made the Tang army in Jian'an City cheer loudly.

They cheered for repelling the Koguryo people, but you must know that they were determined to die. Nearly 40% of the soldiers were poisoned, and only half of the soldiers in the city defended the city. This made the Tang army even worse with a huge difference in military strength.

The balance of forces is completely disproportionate. How can we fight this battle? We can defend, but how long can we last?

With so few people missing, it was only a matter of time before the city was captured.

Regarding the loud noise, some people on the tower still saw clearly what was going on.

They just saw it clearly, but they couldn't tell the reason. Who in this dynasty knew such an advanced thing as artillery?

After the Gaoguli people retreated, Luo Yi and others withdrew the artillery from the city wall.

Cheng Yaojin and others wanted to stop them, but they stopped in the end. In the final analysis, this matter still had to be done with Luo Zhang. It was useless to stop these things that could repel the Gaoguli people. They had just watched for a while, but they had no idea.

Figure out what this is.

After the war, repairs should be made and the battlefield should be cleaned.

In the city lord's palace, all the generals gathered together again, but this time, everyone's faces were not very good-looking.

Although the battle was won, the victory was very embarrassing. It was not their efforts to win at all, but Luo Zhang's own efforts. Not to mention, the murderer of so many soldiers who were poisoned has not been found yet.

Only the water the soldiers drank was found to be defective.

But the water is supervised by dedicated personnel, so what could go wrong?

"Thanks to Luo Zhang this time. If it weren't for Luo Zhang, the Jian'an City would have been taken away by the Gaoguli people!" Cheng Yaojin was the first to speak.

"Yeah, who would have thought that Su Wen Gaiyuan would be so crazy that he would come out in full force and besiege Jian'an. What's even more vicious is that he actually poisoned our soldiers. It's really hateful!" Niu Jinda said angrily.

"Luo Zhang, how did you fight off the Gaoguli people? What was that black thing? How could it make such a loud noise, and how could the object hurt so many Gaoguli people?"

Hou Jun asked like a barrage of questions.

Hearing this, Luo Zhang had a wry smile on his face. Luo Zhang knew that as soon as the artillery was unveiled, it would definitely arouse everyone's curiosity, but there were probably too many questions.

"I'm telling you, please let me tell you slowly. When I finish, you will understand. But don't be impatient!" Luo Zhang pressed his hand to calm down Cheng Yaojin who wanted to say more.

Seeing this, everyone sank their hearts and waited for Luo Zhang to give them an answer.

Luo Zhang thought for a moment and then said: "The dark thing you saw today is called a cannon!"

"I participated in the research of the artillery a few months ago and built it secretly. Your Majesty is aware of this matter, but in order to keep it secret, no one except the craftsman who built it said it. This is also what His Majesty requested.

Please forgive me for not telling you!"

"Everyone should also know that the wooden lump is filled with gunpowder, and this artillery is equivalent to the enlarged wooden lump. It also uses gunpowder, but the amount used is larger, so the power is naturally much greater.
Chapter completed!