The room goes through the late Ming Dynasty, and the back door leads to North America at the beginni

The army gun modified by Liu Sheng is equipped with a front sight and a rear sight, which can be used for aiming and shelling.

The artillerymen responsible for firing the artillery selected outstanding arithmetic from the guards, specially trained them, and taught modern artillery techniques and algorithms.

Liu Sheng used a telescope to observe that there was only one general cannon on the south wall, and informed the artillerymen of its precise location.

The five army cannons immediately aimed at the general cannon at the city gate tower, and first fired with stone bullets.

Boom boom...

Five cannon shots were fired in a row.

Five stone bullets landed near the city gate tower.

Some hit the city wall, some hit the roof of the city gate, and some hit the left and right sides, but they were all very close to the general cannon.

An unlucky country soldier was directly hit to death by a stone bullet, and the left half of his shoulder was missing. Several rural soldiers and servants were injured by splattered wood spikes and gravel.

Although Pan Hong, Cheng Zhineng, and Pan Cheng were fine, they were also shocked. They did not expect that the enemy's cannon test fire was so accurate.

Then Pan Hong hurriedly ordered, "Fight back! Fire back quickly!"

Pan Cheng reminded at the side: "Sir, their cannons are beyond the range of the general's cannon."

The four general cannons cast by Pan Hong have a range of only a little more than one mile, and the one and a half mile position is really out of reach.

Pan Hong regretted not casting a larger cannon. He patted the wall with regret and said, "Let the soldiers hide behind the wall first and wait for the thieves to cross the moat before fighting back."

Cheng Zhineng reminded at this time: "Old magistrate, looking at the cannon test just now, the thieves may want to knock out our general cannon."

Pan Hong was shocked when he heard this and said hurriedly: "Quick, move the gunpowder away first, and then move the cannon!"

Although the rural soldiers were trained and trained by Pan Hong with sufficient food and salary, it was the first time they faced more than a thousand enemies, and it was also the first time they experienced artillery bombardment.

At this time, many people were frightened. After hearing this, only a few warriors went up to carry out the order.

Pan Hong shouted angrily when he saw this, "If you are so afraid of death, aren't you afraid that thieves will invade the city and destroy your wives and daughters?!"

These words finally had an effect, and the village soldiers took action one after another, moving gunpowder and moving the general's cannon.

One of the captains said: "Mr. Magistrate, this cannon has been moved. It will take a long time to fix it again. What if the enemy takes the opportunity to attack the city?"

Pan Hong said displeased: "You don't have to think so much, just execute the county's order!"

After hearing this, the captain of the rural soldiers could only ask his men to move the cannon.

Under the city.

Liu Sheng was not satisfied with the lethality of these five test shells - mainly because he was used to the shelling of later generations, so he always felt that the shelling at this time was like a child's play house.

But he knew that it was good to be able to test fire so close to the general's cannon.

So he ordered the second round to use explosive ammunition.

The Tiger Crouching Cannon cannot use explosive ammunition, but the Army Cannon can.

However, the rebels have very few explosive shells and can only use them in key places at critical moments. It is impossible to use artillery shells to clean the ground.

The rebel army cannon is very light, and the artillery truck only weighs more than 600 kilograms. Therefore, it is easier to clean the gun barrel, making the firing interval shorter than that of the Hongyi cannon of the same caliber but weighing several kilograms.

With the current level of Rebel gunners, one shot can be fired in six or seven minutes at the fastest.

If I continue training in the future, I may be able to improve to the level of serving every five minutes.

Taking this opportunity, Liu Sheng continued to observe the city wall with a telescope and found that the Ming army was actually moving the general cannon, and he knew that the opportunity had come.

Immediately ordered the Tiger Crouching Artillery Team, expanded to 20 guns, to go to the city wall 300 steps away and fire.

Although the Rebel Tiger Crouching Artillery is more than two feet long (nearly 70 centimeters), it weighs only more than kilograms. The artilleryman can sprint short distances while carrying it.

There were three people in each artillery team, who were responsible for the anti-tiger crouching cannon, the marbles, and the gunpowder. After leaving the position, they ran north at sprint speed.

The so-called three hundred steps outside the city wall is actually two hundred steps in front of the rebel position (one step in the Ming Dynasty was two steps = 1.5 meters).

Therefore, in almost less than a minute, twenty tiger crouching artillery crews rushed to the city wall 300 steps away, ready to fire.

On the city wall, Pan Hong and Cheng Zhineng took the risk to peek out and were shocked again when they saw this scene.

"Are the thieves going to hit the city with a squatting tiger cannon?"

"Can you carry a squatting tiger cannon that's over two feet long and run so fast?"

At two feet long, it is definitely a big guy among the Tiger Crouching Cannon.

The big general cannon that made Pan Hong proud was only close to three feet.

After coming back to his senses, Pan Hong was about to give the order for the general's cannon to be fired.

But it was only after seeing the local soldiers that they moved it out of the gun emplacement. It was estimated that it would take at least half a quarter of an hour to reset it.

He immediately regretted his previous order to move the cannon.

Then he ordered: "The bandits are only attacking the south wall. One general cannon here is definitely not enough. Go and move the other three general cannons here!"

Then he ordered, "Where is our Crouching Tiger Cannon? Can't it hit the thieves?"

"Reporting to the county magistrate, our Crouching Tiger Cannon can only hit more than 200 steps at its furthest."

Pan Hong's 12 squatting tiger cannons made of pig iron are relatively short, each one is only more than a foot long, but they also weigh several dozen kilograms.

Because pig iron is brittle, it must be thick enough to cast cannons.

Speaking of which, Pan Hong risked his life to command on the city wall, which seemed very active, but several consecutive orders made the rural soldiers confused and confused.

Cheng Zhineng was helpless when he saw this scene, but he could only restrain the soldiers and hide behind the walls.

Boom boom...

The gunfire sounded again.

But it was the rebels' Crouching Tiger Cannon that fired.

All they fired were stone bullets.

Each stone bullet weighs only about a kilogram, but almost all of them hit the city wall accurately, not the wall.

After the stone bullets fall, they either ricochet or fragment and splash. Even if the defenders were hiding behind the walls, they would be injured if they were not careful.

Some unlucky country soldiers were even hit directly by the Tianling Cap and died on the spot.

This time, the rural soldiers on the city wall became even more chaotic, but the camp soldiers performed better.

Liu Sheng calculated that the Army artillery was about to fire its second round, and then it could fire alternately with the Tiger Crouching Artillery.

Two rounds of Tiger Crouching artillery shells plus one round of Army artillery shells. The interval between each round was only more than three minutes, which was enough to suppress the defenders' attack.

So he ordered to attack the city.

Peng Youyi led the first battalion to attack the eastern half of the city wall, and Yang Heqing led the fourth battalion to attack the western half of the city wall.

Because there was artillery fire to suppress the defenders, and there were internal responses in the city that could be mobilized at any time, Liu Sheng directly dispatched these two relatively brave and combat-savvy battalion commanders from the standing army.

The siege equipment was not too complicated. There were five aerial ladders and dozens of long bamboo ladders with hooks on each side.

Then there are hundreds of flying bridges used to cross the moat.

The so-called flying bridge is actually a folding ladder, also called a trench bridge, which existed in the Song Dynasty.

The soldiers carried it to the moat, opened the folded part, and pushed it to the other side.

If it's not long enough, you can continue.

There are also wooden beams at the bottom of the ladder that can be lowered for fixed support.

Put wooden planks on it and it becomes a simple bamboo bridge.

Generally, the moat of a city is at most a few feet wide. It is not difficult to cross the river with this kind of moat bridge, and it is much faster than sending people to fill the river with soil.