Qu Shawei ordered the cannon to be fired, and twenty artillery battalion soldiers inserted red-hot iron drills into the cannon doors at the same time.

Immediately there was a continuous loud noise of "Bah, Bah, Bah, Bah", and along with the huge sound of gunfire, 20 Hongyi cannons and the heavy artillery carriage retreated at the same time. Cannons without braking devices were troublesome.

The twenty Qinwang scholars were busy resetting the artillery carriage and measuring the parameters again.

Qu Shawei raised his telescope and observed the impact point of the shells. The first round of shelling had a good effect.

The 20 shells basically landed at the point he chose, and the largest error rate was less than five steps.

At a distance of 500 steps, this error rate is okay, not great, but not bad either.

The impact point chosen by Qu Shawei was in the middle of the city wall twenty steps to the right of the city gate. The outer surface of this wall had been dented quite a bit due to wind and rain erosion, making it a weak point.

The 20 shells just now basically hit the pit.

A large amount of rammed earth was seen falling in the smoke and dust.

After a while, the smoke and dust dispersed, and Qu Shawei could clearly see with the help of a telescope that there were more than a dozen pot-lid-sized craters in the depressions in the outer wall. The effect was good.

"The first one is good, the second one is better..."

The artillery battalion soldiers quickly completed the measurement of shooting parameters.

"Load the artillery shells." Following Qu Shawei's order, the artillery battalion soldiers began to load the artillery shells again.

It's just that the second reloading is much more troublesome than the first. You have to use a brush with a hook to hook out the shredded paper and gunpowder residue in the barrel, and then use a brush soaked in water to clean the barrel and extinguish the remaining gunpowder.

Mars, then wrap the gun barrel with a dry cloth and wipe the barrel dry before reloading the paper shell.

Qu Shawei estimated the time and found that the first shot only took more than a minute.

But the second shot took a full three minutes, twice as long.

"Fire!" Following Qu Shawei's order, the artillery battalion began the second round of firing.

Qu Shawei raised the telescope and once again aimed his vision at the impact point in front of him.

When the smoke and dust dispersed, Qu Shawei could clearly see that the craters in the wall recesses had been connected into pieces, and there were even tiny cracks like spider webs. This was a good sign.

Chongzhen suddenly appeared at the artillery camp with Zhu Cijiong, Wang Chengen and others.

"Qu Shawei." Chongzhen asked, "What was the result of the shelling? Is there no problem?"

"Oh, Your Majesty, the great, unprecedented, wise, mighty and omnipotent emperor, why did you come to the artillery camp? This is not the place where you should be." Qu Sha said, stroking her chest slightly, "You should go to the back."

"Talk like a human being." Chongzhen shook his head and asked angrily, "How long will it take for the city wall to collapse?"

Qu Shawei then said with a proud face: "It will take at most two hours to destroy the city wall."

"Two hours?" Chongzhen was a little surprised. He originally thought it would take three to five days.

"Yes, two hours is enough." Qu Shawei said, "Pingyiwei's city wall has seriously aged, the bricks have fallen off, and the rammed earth has also been severely weathered. If nothing happens, it will collapse in two hours."

"That's great." Chongzhen turned to Xu Yingwei, who was accompanying him.

"Youzhen, you should also be prepared in case Sha Dingzhou jumps over the wall in a hurry."

"Your Majesty, don't worry." Xu Yingwei said, "If the rebels don't come out, that's it. If they dare to come out, they will never come back!"

…

Sha Dingzhou had already retreated under the city wall.

The Ming army had already pushed the Hongyi cannon to within a distance of five hundred steps. It was really stupid to expose themselves on the tower at this time.

Even if you were hiding under the city wall, you could still hear the huge crash.

You can also clearly feel that the east wall of Pingyiwei is shaking slightly.

"Headquarters, something bad has happened!" Tie Zhihu poked his head out from the parapet and shouted, "The Ming army's Hongyi artillery is blasting a point twenty steps away on the right side of the city gate. The outer wall there

There was originally a dent on the surface, but now the dent has become larger and deeper, and there are also a lot of cracks. It looks like it won't last long."

"How long can it last? How long?" Sha Dingzhou said with a dark face.

"How do I know this?" Tie Zhihu scratched his head and said, "It will only take a day or two at most."

"Can you only last a day or two?" Sha Dingzhou's face completely fell, he was in trouble.

"Husband, let's hurry back to Ami Prefecture." Wan Shi also came over at some point, and said anxiously, "Although Ami Prefecture is not as dangerous as Mengzi Prefecture, it is easy to defend and difficult to attack, and there are more

As long as my people return to Ami State, we can persist for a longer time."
Chapter completed!