However, for the so-called 'gift to the teacher' faded out of people's field of vision and gradually became unknown, Zhao Hao understood that the root cause was that the form of war had changed. In the Spring and Autumn Period, the scale of the war was generally not large, taking the battle of Chengpu between the two superpowers of Jin and Chu as an example, the Jin State dispatched only about 50,000 troops, and this was already the top war in the Spring and Autumn Period. In addition, the form of war is also relatively simple, mainly positional warfare, and the arrangement of troops is relatively simple; In addition, wars are of short duration and are usually over on the same day once engaged.

The purpose of the Zhishi is precisely to boost morale and strike at the other side, so the Zhishi coincides with the pattern of warfare in this period. However, after the Warring States period, the scale of the war was often hundreds of thousands, and not only was it often carried out in the complex terrain surrounded by mountains and rivers, but also more and more attention was paid to the arrangement of troops and tactical skills, and the time of the war also changed from a short and flat war to a protracted war. In this case, the outcome of the war depends more on the strength of the two belligerents and the ability of the commander to command the troops, and then on the professionalization of the military and the birth of famous generals.

On the other hand, the influence of the morale of the imminent battle on the victory or defeat has continued to decline, and the influencing factors of the war, which were doubled before the Spring and Autumn Period, such as the victory of the mourning soldiers and the righteous army, have gradually taken a back seat or even have nothing to do with the overall situation. The morale-boosting effect of the mentor has lost its necessity, and with the widespread use of the long-range crossbow on the battlefield, the mentor is often left to make unnecessary sacrifices. As a result, the demise of the teacher has become the general trend.

Zhao Hao had heard of this for the first time, so even if the enemy used it, he didn't understand, most of them didn't wait for them to get there, and they ordered to shoot and open fire, killing the enemy generals in front of the formation, where would they wait for them to break into the formation and harm themselves. The current Song army was reorganized, reformed, and reformulated the rules of battle by his own hands. Even if some generals understand these 'ancient rites', they will abide by the current rules and will not send generals to fight.

"Your Majesty, the thieves have come to the front of the battle to provoke, if you don't send your generals to fight, won't it damage your morale!" Seeing the Mongolian cavalry galloping back and forth in front of the battle, whistling, and insulting incessantly, and even Mongolian soldiers on their horses doing handstands, hiding in stirrups, riding donkeys upside down, showing off their horse skills, but their own side did not move, Wang Yinglin was a little breathless.

"Governor Wang, don't be anxious, they are just provocative, they don't dare to break into battle!" Zhao Hao smiled.

"Your Majesty, why is that?" Wang Yinglin fixed his eyes and looked again, and sure enough, those enemy horsemen only dared to gallop back and forth a hundred steps away, as if there was an invisible fence in front of them, so that they did not dare to cross it.

"The Mongols, though barbarians, were not stupid, and they had fought our army several times, and they had already realized that our firearms, although sharp, lacked accuracy at a distance of a hundred paces. And although they are skilled in bowing horses, they ride on bumpy horses, using bows and arrows for accurate aiming and shooting, which is quite difficult and requires long-term hard training. In cavalry archery, due to the limitation of force, the bow used for mounted archery is basically weaker than the bow used for infantry shooting, and the shooter standing on the ground at the same time has a better shooting accuracy than the cavalry archer, so even if our army does not have muskets, they do not dare to approach easily. Zhao Yu explained.

"Yes...... But shall we let them insult His Majesty in front of the battle and provoke them wantonly? Although Wang Yinglin understood the reason, the enemy army was only quick to speak, and in fact, he could not threaten his own side, but he still felt angry.

"This is also a trick by the enemy soldiers to lure the enemy, and their constant provocations are intended to provoke our generals. These provocative cavalry sent by the enemy are all skilled archers on archers and horses, and once we send our troops to attack and the number is small, they can take advantage of the low rate of fire of our muskets to shoot them and suppress the morale of our troops; And if we send a large army to surround and kill, once the flaws are revealed, the enemy brigade that has been prepared for a long time will take the opportunity to cover up and break through our array. Zhao Yu knew that he was nervous for the first time, and the way to alleviate his anxiety was to let him keep talking, and said with a smile, "But we won't let it be arrogant, the show will be staged after a while, Governor Wang can just wait and see!" ”

"This ......" As soon as the little emperor's words fell, Wang Yinglin suddenly saw several enemy cavalry who were provoking in front of the formation dismounted without warning, as if they had fallen into an evil spirit, while the other enemy cavalry scattered like frightened rabbits and fled towards the formation, but just like the continuous falling horses just now. He looked at the little emperor with a little panic and admiration, thinking that he had cast an immortal spell and knocked the enemy soldiers off his horse.

"Okay, these shots are relieving!" For a while, there was a burst of cheers in the camp, and the morale was boosted, and Tan Fei, who was beside him, also high-fived and applauded.

"This was killed by a musket?! But Your Majesty just said that the musket used by our army will be dead from a hundred paces! Wang Yinglin was confused again.

"Governor Wang, this is a newly invented firearm invented by His Majesty, and it can be used to wear heavy armor within a hundred steps!" Tan Fei turned his face to look at the little emperor, then turned around and said with a smile.

"In that case, why don't Your Majesty fully replace this musket, wouldn't it be a hundred battles!" Wang Yinglin was even more surprised when he heard it, why not use such a good thing!

"Hehe, it's still because of lack of money! Although this rifled gun is easy to use, the cost of production is also more than doubled. Zhao Hao said with a wry smile.

He knew that the spiral lines engraved in the chamber of the gun were repeated lines, so that the fired warhead rotated forward at high speed, increased the stability, range and penetration of the bullet flight, made the projectile fly stably in the air, and improved the shooting accuracy and range, which had incomparable benefits compared with the smoothbore gun.

The processing technology of rifling is not complicated in Zhao Hao's view, and it can be produced with existing technology, but there are also shortcomings. First, the processing of rifling will inevitably increase the process, so that the manufacturing cost of the barrel will rise, and the yield will decrease; In the case of spherical projectiles, after loading the barrel, it is necessary to use the whole strip to punch to deform the projectile and embed the rifling, so as to improve the air tightness, so that the range and accuracy are improved. However, it is also due to the inconvenience of reloading, which prolongs the time for recharging, and requires frequent maintenance to clean the rifling wires filled by lead bullets.

Therefore, from the perspective of cost and efficiency, Zhao Yu hid the rifled gun after it was developed and did not put it into production. After recovering Jiangnan, he remembered that he could make a bullet with a hole in the bottom of the bullet by improving the bullet, and the gas when the bullet was fired would expand the bottom of the bullet through this hole and engage with the rifling of the barrel. In this way, the diameter of the warhead can be made smaller than the inner diameter of the rifle, which solves the problem of difficult loading of front-loading rifled guns, which is comparable to smoothbore guns.

But after the trial production of a batch of guns, Zhao Yu stopped the continued production of rifled guns. The reason is still the problem of cost, the production cost of the re-entry line is still high, and the army has been repeatedly expanded, and it is also a huge amount of money that can hardly bear to replace all the 300,000 smoothbore guns that are still usable. As a result, these rifled guns were equipped with a ruler for adjusting distance and aiming, and some of them were left in the guard battalion, and most of them were handed over to sharpshooters selected by various armies, which were specially used for long-range sniping of enemy generals and important targets.

These sharpshooters are not used in wartime in large groups, but act in groups, firing freely at the targets they choose to fire according to orders or at their own discretion. The enemy horsemen who had just been hovering beyond the range of the shotgun's accurate fire were not worth firing in a group or shelling with artillery, and it was annoying not to pick them up, so it became the sharpshooter's dish, and the battle began.

'Woo woo woo ......' failed to lure the enemy, the Yuan army immediately changed tactics, and then sent troops to fight, and in the sound of the horn, several teams of cavalry rushed out from the Chinese army and rushed towards the front of the Song army.

"Your Majesty, this time the Tartars are really going to charge into battle, why don't they fire yet?" Although Wang Yinglin tried his best to suppress the panic in his heart, he could not hold his breath when he found that after the enemy troops rushed within 100 steps of the formation, although his own soldiers had raised their guns and were ready to shoot, they did not shoot for a long time.

"Governor Wang, this is just a tentative attack by the enemy, they know that they can't break through our line, but they are looking for a flaw!" Zhao Hao touched his chin and said. sighed in his heart, it is definitely a wise move not to use Wenchen to lead the army, Wang Yinglin is also a good minister, but he is not familiar with military affairs, and he still can't help but panic when he goes to the battlefield.

While speaking, Zhao Yu did not put down the binoculars, and kept staring at the battlefield, and the situation was just as he said. The Yuan army still used the usual tactics, sending several centurians to light cavalry, through roundabout or semi-roundabout tactics, outflanking the enemy's position in an array that lacked the protection of infantry archers to carry out close-range strikes; Or form a local numerical advantage through maneuver advantage, create a dense rain of arrows, to suppress the opponent's infantry, once the enemy collapses, or there is confusion, take the opportunity to charge the formation.

In general, in the face of strong infantry that can put themselves in a dignified formation, the cavalry archer mainly plays a role of harassment and weakening. What really worked was the hand-to-hand combat impact of the cavalry after the attack and weakening, and the Mongolian army and the Song field were first disturbed and weakened by the cavalry attack, and then completely crushed by their general attack. Correspondingly, the mounted archers are also easily suppressed by the opponent's infantry archers, so in the dignified formation, although the mounted archery will give the opponent a headache, it is not impossible to restrain and be invincible.

At present, their own side has not fired for a long time, and it is precisely because they have seen through the tactics of the Yuan army, they are just waiting for the opportunity to fire, rather than letting it attack, and this is also the experience that Zhao Yu has gained through countless battles......