Zhang Zheng's face was full of three big words of displeasure, so that everyone who came to watch was a little baffled.

"Uncle, how do you use this thing?" Chen Yu asked in a low voice, because no matter how he looked at it, he couldn't see what the secret weapon in front of him was.

"Spread the a little bit for Lao Tzu, Lao Tzu will personally light the experiment." No matter how painful Zhang Zheng was, the money had already melted into a copper lump in front of him, and he had no choice but to endure the heartache and order.

When a group of people heard this, they hurriedly dispersed and gave up their position to Zhang Zheng. In fact, no one will use this thing except Zhang Zheng.

After looking around a few artillery pieces, Zhang Zheng knew what to expect. To put it bluntly, this thing is just a few enlarged versions of fireworks.

Stuffing the gunpowder into the barrel of the cannon, Zhang Zheng took out an iron egg the size of a human head from the wooden box on the side and stuffed it straight in front of the muzzle.

"Is that okay?" Chen Yu's questioning voice sounded. Zhang Zheng glanced at him with the eyes of a turtle, and then adjusted the direction of the muzzle.

Since it is not known what the range of this gun is, there is naturally no target in front. Moving out of the lead, Zhang Zheng handed the fire fold to Chen Yu and said, "You come to light the fire, remember, run away after lighting!" After Chen Yu took the fire fold, he turned around and ran to the bunker hundreds of meters away, revealing only a pair of eyes.

Who knows if Li Tai's test is reliable, what if it blows up? Chen Yu looked at the uncle who ran away a little confused, didn't he say okay, you will experiment yourself?

twitched the corners of his mouth, and seeing that everyone had run away, Chen Yu tentatively lit the lead. Turn around without the slightest hesitation and run!

The action is a mess.

"Boom...", but after a few breaths, there was a loud bang in the clearing. The recoil of the artillery fire almost made the entire ground tremble.

Seeing that the shell was successfully launched, Zhang Zheng plucked out his ears and came to the front of the still smoking barrel. Chen Yu immediately sent a soldier to beat his horse and gallop towards the place where the cannonball flew.

Zhang Zheng stuffed a mop made of cloth into the barrel of the cannon and began to clean the barrel, and commanded a personal guard to find warm water to cool the barrel.

After doing all this, Zhang Zhengcai yelled at the onlookers: "You can see how this thing is used, right?" The soldiers looked at each other, and to be honest, this thing seemed to be no different from a grenade except for the sound that sounded a little.

"Uncle Yu, the range of the cannonball is about three miles, and where the cannonball lands, there is a big crater with a diameter of about four feet and a depth of about two feet..."

Among them are Li Wucun and Chen Yu standing next to Zhang Zheng. Range three miles, what is this concept?

Almost thirty times the distance of an average archer! And many people didn't see how the shells were fired.

"Shhh There was a sudden sound of toothache-like inhalation. Zhang Zheng's face was calm. It's only three miles, and it can't meet psychological expectations at all, okay?

The missiles of the later generations of the flower family can shoot 3,000 miles away, and the error is not more than one meter.

"A bunch of turtles!" With a sneer, Zhang Zheng beckoned over a few soldiers and ordered: "Unload this thing and move it to the city wall!" Looking at Zhang Zheng's breezy appearance, everyone only felt that they were so impressed in their hearts that they fell to the ground.

After all, this thing was researched by His Royal Highness King Wei, and His Royal Highness King Wei was the student of the young man in front of him.

As the saying goes, blue is better than blue? Returning to the command center converted into the Assassin's Mansion, Zhang Zheng began to ponder.

To be honest, the three cannons sent by Li Tai did not have much effect on the current battle situation.

After all, Datang is the one who defends the city, and the cannon is almost the same for attacking the city. Unless you're lucky enough to blow up the enemy commander with one shot.

However, its firing range is a big shortcoming, and the range of three miles cannot shoot at all the enemy's Chinese army battalion.

In the end, Zhang Zheng made a decision for these three cannons: "Chicken ribs, tasteless food, it is a pity to abandon them." What really made Zhang Zheng care was the thousand ink people led by Li Wucun.

Although Prince Saya's heart has already made arrangements for the usefulness of these thousand people, this does not affect Zhang Zheng to give suitable advice.

Again, the enemy camp seems to have been a little too quiet in the past three days, and there is not even a suspicious plan and daily harassment against Xizhou City.

Zhang Zheng doesn't think that the enemy is wilting, maybe he is holding back some big move. After thinking for a while, Zhang Zheng instructed the guards outside the door: "Summons the prince of Sayato come to the assassination mansion to discuss matters." ”… On the fourth day, in the early morning, before Zhang Zheng woke up, he heard a report from the guards, and the enemy camp seemed to have a new move.

Zhang Zheng hurriedly put on his armor and went up to the city tower, and while observing the movements of the enemy army with a clairvoyant mirror, he asked the solemn Saya Prince, "What's the situation?" But before Sayachu could answer, a shout of killing rang out outside the city.

"The enemy is about to start attacking the city again, but this time it is the left flank of the Chinese army." Sayakuzhu held up a clairvoyant mirror that was exactly the same as Zhang Zheng, and said with some solemnity.

Zhang Zheng asked with some curiosity: "Is there any difference between the left wing of the Chinese army and the front army?" Sayakuza nodded and said, "The front army is basically a temporary patchwork of various small countries in the Western Regions, while the left flank of the Chinese army is a large formed army. They are from Gaochang. Hearing this, Zhang Zheng hurriedly looked at the moving army again, and after a while, his face was also solemn.

Gaochang is a big country in the Western Regions, and although its domestic elite divisions are not as good as the Tang Dynasty, they are much stronger than the rabble of the former army.

Whether in terms of weapons, armor, or morale, it is far superior to the miscellaneous troops of the previous army.

Judging by its momentum, at least it is not the kind of Tang Army that can be defeated by throwing a few rounds of grenades.

"It's going to be a tough battle today." Zhang Zheng muttered to himself, and shouted: "Meet the enemy!" "This siege is really different from the previous two.

Every Gaochang soldier has a resolute look on his face, and when the war drums are beating, he can be called like a rainbow.

Moreover, in this siege battle, Gao Chang's soldiers also carried a large number of siege things such as ladders and ziplines.

At the forefront, there was a row of heavy cavalry holding huge iron shields and heavy armor, the number of which was not much, about a thousand people.

Half of the soldiers in the back held shields, and the other half pushed the ladders and other equipment used in the siege. Looking at the heavy cavalry slowly coming towards Xizhou City, the solemn look on Saya Chu's face became even stronger, and he said slowly: "This time, Gao Chang should have sent out all the domestic heavy cavalry. "The situation in front of us is already obvious, the Tang army has grenades, and the coalition forces of the Western Regions will arrange the Gaochang heavy cavalry at the front as a meat shield.

The sergeant in charge of the siege hid behind the meat shield and transported the siege equipment such as ladders and ziplines to the city of Xizhou.