As a matter of fact, the requirements for the training program stipulated in the "Artillery Drill Code" are already lower than Li Yongtang's requirements for artillerymen.

After all, the "Artillery Drill Code" is a written law, and it is impossible to amend it anytime and anywhere. Therefore, proceeding from reality, on the premise of ensuring that the chamber is not blown up, Li Zhongyi granted Li Yongtang a certain degree of training autonomy.

Artillery is originally a new thing, and it especially needs the spirit of exploration that dares to fight, fight, and dare to rush through. The laws of science determine that it is precisely because of countless perseverance and failure that it is possible to lay the foundation for success.

In the previous training, Li Yongtang and the artillerymen, although they did not grasp the fine influence of wind direction on live ammunition shooting. However, as long as you practice more and summarize the lessons learned, you will always find a reliable way to deal with it.

In Li Zhongyi's previous hospital, there were actually many old doctors who were retiring and were only attending physicians. They do not have a high professional title, nor do they have a high academic background, let alone a hard backer.

However, in addition to quacks who can only mess around, there are also many old doctors who have mastered their own unique skills, but they do not have the opportunity to show their faces in front of the governors, associations and the media.

The number of consultations has remained high all year round, and repeatedly summarizing the efficacy of prescriptions and finding out the common rules is the basis for these old doctors with low professional titles to really spend a small amount of money to treat major diseases

In the same way, sharpshooters, sharpshooters, and oil sellers, many of the laws of actual combat need to be found from familiarity.

Li Zhongyi's strict orders made Li Yongtang feel tremendous pressure, and he meticulously corrected the firing angle of each cannon one by one until he was satisfied.

Li Jiajun's divine arm crossbow, which is expected to be assisted by the mountain, increases the accuracy of shooting. The technology of artillery is more high-end and more complex, and the scale that measures the elevation angle of a shot is a wooden ruler about three meters long.

According to the basic principle of three points forming a line and a parabolic trajectory, the gun carriage will be raised or lowered, and the whole process of calculation includes not only the mathematical knowledge taught by Li Zhongyi, but also the rules that the artillerymen have explored in practice.

In his daily training, Li Yongtang carefully discovered that because the reaction force of the 12-pounder gun was too great, at the moment of firing, the gun carriage or the barrel would shake or retreat, resulting in a huge error in the firing angle.

Finding a problem does not mean that it can be solved immediately, which requires racking your brains to find a solution.

At the moment when Li Yongtang was at a loss, Li Zhongyi ordered him to put the 6-pounder gun on the warship for experiments, the sailors put the base of the 6-pounder gun on a special slide rail, and firmly tied the barrel and tail of the gun carriage with thick hemp rope, which greatly cushioned the after-action force generated when the gun was fired.

Li Zhongyi has watched a lot of pirate movies, and he is not familiar with the scene of the breech gun carriage tied with thick hemp rope and fired on the ship.

Li Yongtang had an idea, since special slides and ropes could be used on the ship to counteract the reaction force of the artillery fire, it should be possible to do the same on land.

After repeated experiments, Li Yongtang was surprised to find that on land, even if there were five thick wooden stakes tied together on each side of the artillery, they would be dragged to the ground by the huge reaction force of the 12-pounder gun.

Then the problem arises, according to the requirements of the "Artillery Drill Code", in a fifth of a quarter, that is, within three minutes, it must be fired once, which is obviously not possible.

Because, from re-bundling, tamping the thick wooden stakes, to pushing the cannon into the firing position, to calculating the elevation angle, loading the ammunition and ammunition, the whole process is completed, at least half an hour or more.

Now, since Li Zhongyi has given a strict order, Li Yongtang has been forced to have no choice, so he has to adopt the strategy of advancing three sets of plans at the same time, and must ensure that the next shell can accurately hit the city gate of Bozhou.

Under Li Yongtang's adaptation, the 12 12-pounder guns were changed from five salvos to accurate fire fired one after another.

Each 12-pounder gun was lifted onto land-specific gun carriage slides, and fixed wooden stakes in groups of five were changed to groups of 20.

Li Zhongyi rode on the back of the "bloody killing" horse, kept turning the monocular in his hand, and silently observed the artillerymen's every move.

"Hmm, that kid Li Yongtang is very good at being opportunistic!" Li Zhongyi naturally understood Li Yongtang's intentions, and a joyful scolding implied that immediately burst out of his nostrils.

Li Zhongyi thought about it for a while, and immediately realized that it was time to revise the standards for siege in the "Artillery Drill Code".

The so-called wise man has a thousand thoughts, and there must be a mistake!

In the past, Li Zhongyi thought about how to use artillery to kill the Khitans' fast elite iron cavalry as much as possible when he was fighting against the Khitans in the wild.

Therefore, in the artillery drill code, Li Zhongyi paid special attention to the issue of firing speed.

God was fair, giving the artillery great power while limiting the rate at which it could fire.

In the Li family's army, a well-trained crossbowman's basic tactical requirement is to shoot at least three arrows in one minute.

In the same minute, the skilled archers in the Li family's army could shoot at least 9 arrows. Of course, due to the physical strength of the archers, it is impossible to maintain this rapid fire speed for too long.

According to statistics, an ordinary archer at a medium level can shoot up to 18 arrows in one breath, and then because of his weak back, he needs to rest for at least a quarter of an hour before it is possible to recover sixty percent of his physical strength.

With the scientific basis of experimental exploration, the basic tactics of Li Jiajun's archers and crossbowmen were all three-stage strikes or five-stage strikes, which not only saved the physical strength of the warriors, but also achieved the maximum attack effect.

"Quick, quickly carry the wounded soldier down and find Lang Yi for treatment."

During the interval between the artillery firing of the Li family, Fu Zhaoxin quickly woke up and immediately issued a series of orders.

"Hurry up and put the sandbags in front of the arrows, and everyone squat behind the sandbags to avoid being injured by the rubble."

"Pass my orders and stay away from the city gatehouse, lest the gatehouse collapse and be buried in it."

"Bed crossbowman, ready to launch, the target is arbitrary, as long as it is a place where there are many rebels, it is okay."

“……”

Fu Zhaoxin is worthy of being a general, and after he realized the power of artillery, all the military orders he issued were very targeted.

However, no matter how hard Fu Zhaoxin tried, the Li Jiajun he faced had already crossed the primary threshold of the modern army.

Li Jiajun's side, both in terms of national spirit and organizational discipline, is far superior to the forbidden army of the imperial court.

Due to the advent of bronze artillery and the fact that troops have been equipped on a small scale, there is an irreparable generation gap between the killing weapons mastered by the Li Jiajun and the imperial forbidden army under Fu Zhaoxin.

In the Li family's army, in addition to the 12-pound heavy artillery, the remaining dozens of cavalry-style 6-pounder guns were all large-scale killing weapons prepared for the Khitan iron cavalry.

Just imagine, when the Khitans launched a group charge, dozens of 6-pounder guns, according to the three-stage or two-stage attack pattern, uniformly use shotguns or sub-mother chain bullets, that power is great!

Hehe, a salvo of a 6-pounder gun's shotgun is like a scythe of death cutting wheat, and within a hundred meters, it will definitely sweep down a large area of Khitans in the blink of an eye.

After Fu Zhaoxin's military order was issued, sandbags were continuously sent to the city wall, but no one expected that the black iron ball would have the power to destroy the world, hoes, sacks and other things, and the preparation in advance was insufficient, and the progress was very slow.

At this juncture, Fu Zhaoxin profoundly realized that fighting a war is the law of war of fighting logistics and materials.

The remedial measures taken by Fu Zhaoxin are all in place, and what he lacks most now is time to prepare.

However, the war is so cruel, and the backward war thinking makes Fu Zhaoxin only one step wrong, and it is too late to remedy it!

The 12-pounder cannon of Team A after Li Yongtang personally corrected it once again let out a terrifying roar.

"Boom ......"

"Boom ......"

"Boom ......"

Twelve 12-pounder guns were fired sequentially at intervals of twenty breaths.

For a time, on the artillery position of the Li family's army, the roar was earth-shattering, and the pungent smoke quickly spread, enveloping the entire artillery position.

The artillery, known as the god of the army, completely revealed its hideous and terrifying face of death at a critical moment.

The 12-pound iron projectiles of the "boom ......" smashed into the city wall one after another, and the blue bricks wrapped outside the rammed earth suddenly collapsed.

The defenders on the city wall, their shaking figures, had not yet stood firm, and they fell into the next violent shaking.

Some wise people resolutely lay on the ground of the city wall, but the huge impact shook them to the ground.

That's it, the shock wave generated by the iron projectile smashing into the city wall is really powerful. The smart people lying on the ground, quite a few of them, their internal organs have actually been shocked.

Maybe it's a coincidence, maybe it's Li Yongtang's skill, among the 12 black iron balls, there is actually one shot that just hit the city gate.

"Boom!" The 12-pound black iron ball, carrying the divine power of destroying the heavens and the earth, smashed unstoppably on the thick city gate covered with iron sheets.

"Click!" After the frightening loud noise, in Li Zhongyi's monoculars, a huge gap about two meters wide and uneven appeared on the city gate of Bozhou.

"Good, good, good, well done, Li Yongtang is NND, he really fights for Lao Tzu." Li Zhongyi laughed on his back, and decisively ordered, "Order Li Yongtang, the bombardment of the city gate by the 12-pounder cannon cannot be stopped." At the same time, the 6-pounder cannon was fired in three rounds, and it was necessary to give Lao Tzu the invincible prestige and momentum of the steel army. ”

With Li Zhongyi's order, the city wall of Bozhou can be regarded as suffering.

The power of the 6-pounder cavalry gun was not enough to collapse the thick Bozhou city wall, but the rate of fire of the 6-pounder cavalry gun was about three times faster than that of the 12-pounder gun.

For a while, 5 catties of black iron balls, like raindrops, smashed down on the city wall of Bozhou.

The defenders on the city wall were hit one after another by the broken stones of the arrow stacks, and countless people fell to the ground and wailed.

About half an hour later, the originally magnificent and tall Bozhou City Gate Tower collapsed in the rumbling cannons!

In the panic, Fu San was horrified to find that the tiles pouring down from the collapsed gatehouse actually buried Fu Zhaoxin, who was caught off guard.

"Boom!" When the city gate was hit by a 12-pound black iron ball for the third time, the right half of the iron-clad door collapsed in full view of everyone.

"Pass on my military order, capture the Fu Zhaoxin alive, and seal the marquis of a thousand households!" Li Zhongyi decisively gave the order for a general attack.

At the moment when the loud assault horn of "Didi Da ......" sounded, on the Bozhou city wall, the "click" accompanied by the breaking sound of the flagpole, and the handsome flag embroidered with the word "Fu" fell to the ground extremely desolately.