readx; The smoke of gunpowder is billowing and people are turning on their backs. The Mongolian cavalry www.biquge.info thought that they could crush the circle formation of the Ming army in one fell swoop, but they unexpectedly suffered the heaviest blow since the beginning of the war, and more than 100 horsemen were killed on the spot.

Needless to say, the Ming army naturally used a "killer weapon" against the Qing army: grenades. Since this weapon was moved from modern times to this time and space by Zhu Youzhen, it has been deeply loved by the soldiers under his command because of its huge lethality, accurate landing point, and especially good at attacking enemies behind obstacles. Previously, in the Battle of Futao and the Battle of the Daling River Breakout, grenades played a very important role, and even the thief chief Taiji was quite afraid of this new type of firearm.

However, Zhu Youzhen only knew the tactical characteristics of grenades, and he didn't know anything about how to make grenades, so he could only hand them over to Sun Yuanlong and Wei Zhen's apprentices in the military factory for development. The first grenades were also rudimentary, with a fuse exposed outside the shell, which had to be lit with an open flame and thrown out. During the flight of the grenade, the fuse is very easy to extinguish, and it would be good to explode three or four out of ten.

Because of this serious flaw, Zhu Youzhen has never let military factories produce grenades on a large scale, but let them manufacture them on a small scale first, as long as they can meet the minimum needs of the army, and their main energy is still devoted to improvement. The main content of the improvement is naturally the fuse, how to make the fuse burn stably, after a period of delay after detonation, once became the most important topic for military factories.

The old man said it well: the wisdom of the masses of the people is infinite. Zhu Youzhen only gave the craftsmen a hint, that is, the grenade in the previous life needed to be pulled the string, and it would detonate within a few seconds after pulling the string. The so-called "no devil no string" is a vivid portrayal of this tactical action.

Based on this little hint, the craftsmen of the military factory brainstormed at least a dozen options, but after experiments they all failed. Until one day, a young apprentice who had just entered the factory was on his lunch break, and because of his naughty nature, he recklessly pulled out a coal strip from the furnace of ironmaking, intending to play with it as a golden hoop stick. At that time, the stove was not in production, and there was no open flame in the hearth, so the apprentice mistakenly thought that the whole stove was cold.

The furnace had just been turned off, and there was still a large amount of hot coal in the chamber. He pulled the whole strip violently, and because of the friction between the strip and the coal, the sparks that burst out immediately ignited the coal, and the flames burst out, burning the young apprentice's clothes at once. Fortunately, there were other craftsmen present at the time, and the fire on him was quickly extinguished, and a tragedy was averted.

Originally, this was just a minor safety accident, but Wei Zhen was inspired by it. His idea was that the fuse of a grenade was like this stick, as long as you put some frictional flammable gunpowder in the tube, when you pull the "stick", the gunpowder will ignite. Then connect a fuse to the back and lead to a magazine filled with ** and broken iron. The gunpowder in the tube ignites the fuse, and the flames follow the fuse all the way to the magazine, causing the magazine to explode. In this way, there is no need to use an open flame to ignite the fuse from the outside, and the time of detonation is controlled, which perfectly solves the problem of "pulling the string" mentioned by Zhu Youzhen.

After dozens of tests, Wei Zhen's design was finally realized. Although due to the limitation of the production level, there are times when the string is not sounded, that is, the fuze is pulled without causing the gunpowder to burn rubbing, but the probability is greatly reduced. In the past, throwing grenades could explode four or five times at most; Now that the string is pulled, at least eight out of ten times can be successfully detonated.

In order to prevent the explosion caused by the accidental fuse, Wei Zhen also installed an iron shell on the outside of the fuse, and the fuse could only be pulled by pulling the iron shell. At this point, this grenade is almost the same as modern grenades, and what is lacking is only the fineness of the workmanship.

Zhu Youzhen received the report of great joy and immediately organized the military factory to go all out for production. It's just that this technology has just been invented for less than a month, and the production tasks of the military factory are very heavy, so far, only about 1,000 pieces have been produced. Another 300 were used in training, and now only 700 are equipped in the army.

And the reason why Xie Sheng dared to let Meng Gong venture out of the city was to press the treasure on these seven hundred grenades. At this time, this round of grenades was thrown, and more than 100 of the Mongolian cavalry that rushed over were wiped out at once. At this time, these Mongolians remembered that the last time they fought in the Daling River, the white-armored soldiers led by Ao Bai suffered a big loss from this kind of black guy, and Ao Bai himself was almost killed. The white-armored soldiers couldn't bear it, and their light cavalry gave it even more freely.

Originally, the Qing army was still violent, but at this time, it was like a radio suddenly running out of power, and the offensive came to an abrupt end. Meng Gong was anxious at this time, and when he saw that no Qing soldiers were approaching, he immediately shouted: "Keep going!" ”

He wasn't afraid that there wouldn't be enough grenades, only a hundred of them were used up in the round of throwing just now, and there were still 600 in the hands of the Ming army. What he was really worried about was the Qing army's Hongyi artillery, although the accuracy was very poor, but on the battlefield, anything could happen. The Ming army's formation was so dense that once it was hit by a shell, it would not only cause extremely heavy casualties, but also the task of going out of the city could not be completed!

At the sound of an order, a circular formation of hundreds of Ming troops immediately continued to advance without hesitation. And the Qing army was almost stunned by the violent explosion of the grenade just now, coupled with the non-stop bombardment of the free artillery and rapid-fire artillery at the head of the Yongding Gate, the Ming army that had just been killed from the city also firmly followed, and for a while it was so angry that there were signs of collapse.

Taking advantage of the chaos of the Qing army, the circle array led by Meng Gong rushed forward for about 100 steps before stopping. In fact, according to the plan, he should have stopped fifty steps ago, and Xie Sheng at the head of the city could not help frowning anxiously when he saw it from a distance. It must be known that the farther away from the city wall, the more dangerous Meng Gong becomes, after all, he has less than five hundred people under his command, and the surrounding battlefield is full of Qing troops, at least more than 10,000 people!

But "the general is outside, and the king's order is not affected", Meng Gong resolutely made his own decision according to the battlefield situation. At this time, the circle had left the city wall for more than 200 steps, that is, nearly one li, and correspondingly, the distance between them and the Qing army's Hongyi cannon was also shortened to about two miles. Meng Gong immediately shouted: "Target: Tartar's cannon, fire immediately!" ”

At the sound of an order, a circle of hundreds of people suddenly expanded outward, revealing a large open space in the middle. It was only at this time that Mang Gurtai, who was watching the battle from a distance, discovered that there were actually two cannons hidden in the middle of this circular array!

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