"The danger is natural, otherwise it will not make a big difference if it is thrown on the heads of the Mongols." The eldest grandson said, reaching out and carefully uncovering the lid of the wooden box.

Wang Kui stood next to him, unconsciously moved two steps outward, and said with some trepidation: "The gunpowder field outside Chengdu, because of the manufacture of this thing, even the factory was lifted twice, dozens of craftsmen died, and the whole city was shocked. Later, I learned to be obedient, moved the field to a place more than ten miles away, strictly manufactured the process, and forbade uneasy rules. ”

He stared closely at Changsun Hong's movements, his body tensed tightly, and he felt guilty: "Second brother, for this thing, I have spent a lot of money, no craftsman is willing to do this, everyone understands that this thing costs human lives, not only the lives of Mongolians, but even the lives of their own people if they are a little careless in the manufacturing process, and finally I paid ten times the salary and promised a high amount of compensation before recruiting craftsmen." ”

"It's worth it, it's worth it, it's all worth it." Changsun Hong paid attention to the movements in his hands, and slowly took out a round, dark and heavy thing from the box, the size of a small watermelon, and the whole body was iron, like an iron pimple.

Wang Kui looked at the iron watermelon and instinctively took two steps back.

"Don't be nervous, the iron thunder is stable now, and it won't explode so easily if it doesn't ignite, so you can rest assured." Changsun Hong took the watermelon in his hand and played with it, the iron thunder was round, there was a small hole, and a fuse stretched out of it.

Changsun Hong looked at it over and over, gently pulled the fuse, and checked the whole thunder in the palm of his hand to see the weight.

Wang Kui was frightened and took two steps back again.

"It's not bad, but I don't know how powerful it is. Take the time to give it a try. Changsun Hong put the iron thunder back in the box, stretched out his head to look, there were six of the same iron thunder inside, wrapped in dense straw mats, and stayed quietly in the wooden box, and the shock and bumps during transportation had no effect on them.

"Then you'll have to find a wider place, this thing will blow up and make a hole in a square shape." Wang Kui reminded him.

Eldest Sun Hong closed the lid of the wooden box and asked, "Big brother, how much can you give me a month now about the output of iron thunder?" ”

"At full power, there will be six hundred." Wang Kui thought for a while and said, "Twenty a day." ”

"It's too little." Eldest Sun Hong frowned: "Didn't the Great Song Dynasty use firearms a long time ago?" There are munitions craftsmen everywhere, how can there be twenty in a day? ”

"Your firearms are completely different from the firearms of the Great Song Dynasty, right?" Wang Kui smiled bitterly: "Let's not mention that the gunpowder inside is very troublesome, and the structure is not the same." The thunder of the Great Song Dynasty only smokes and does not explode, your thunder is going to explode, and the firearms craftsmen have to grope for it. ”

The eldest grandson Hong looked at him, knowing that what Wang Kui said was very reasonable, so he had to nod helplessly.

The use of firearms in the Great Song Dynasty can actually be traced back to the end of the Tang Dynasty, when rockets and fireballs had already appeared in battle. Li Gang of the Northern Song Dynasty guarded Bianjing, and used thunderbolts on a large scale, firearms spread to the Jin State in the Song-Jin War, and the Khitans also used it as a weapon in large quantities, and the Mongols besieged Kaifeng, and the Jin people used the earth-shaking thunder from the Southern Song Dynasty in the defense of the city.

During the reign of Emperor Gaozong of the Southern Song Dynasty, the bamboo pole musket invented by the old rules marked the first appearance of the body-barreled weapon on the world stage, although it was not popularized due to the many shortcomings of the bamboo pole musket that sprayed flames in terms of range, power and safety, but its appearance laid the foundation for the sudden musket that appeared in the Lizong Dynasty a few decades later.

That is to say, specific to the era of Changsun Hong, the firearms of the Song Dynasty were still at the stage of killing or scaring the other party with the flames and heat energy generated by the gunpowder gas itself, and the complete form of the firearm --- the huge force generated by the projectile jet with gunpowder kinetic energy to kill and injure the enemy, and there was still a layer of window paper that was not pierced.

This layer of paper is easy to say, but it is difficult to poke up.

Changsun Hong can only put forward an idea, draw some drawings that he can't understand, and provide reference for craftsmen of all ages in the ordnance prison.

This is a huge difference in concept, Changsun Hong is not an engineer in the arsenal, and he can't say it very clearly, if you want to be specific, you have to let professional military personnel talk about it, Changsun Hong is obviously not.

He can only come up with concepts, and what he can make, only God knows.

Fortunately, the iron thunder in the box is still gratifying, the wisdom of the ancients should not be underestimated, the craftsmen of the Chengdu Ordnance Supervisor can understand Changsun Hong's thoughts and put it into practice, and make an iron thunder that can explode like a grenade, Changsun Hong can be satisfied.

"Big brother, this Guan Lou will be completed in about a month, compared to the old Guan Lou that was demolished before, it is not only tall, but also much stronger, enough to serve as a barrier." The eldest grandson Hong led Wang Kui to inspect the construction site, and people came and went on the construction site, and it was in full swing.

The ground was full of stones, tools, ropes, and the like, and the two of them carried the ground where they could get their feet, and as they went, they pointed at the high ridges that were plunged into the sky like sharp swords on either side.

"Indeed, the mountain beams on both sides are unattainable, and the terrain is condescending, if another sluice gate is built here, it can store water in normal times, and open the sluice gate to release water in times of crisis, which is enough to wash away ten thousand soldiers." Wang Kui nodded in agreement, looked up at the mountains on both sides, and felt that even his neck was sore.

"Plus Tie Lei, big brother, you are here, you can't open it for a long time." Changsun Hong walked to the front of the Guanlou that had not yet been built, stood on a stone, and the steep slope in front of the Guanlou was under his feet.

"The Sword Gate is a strong pass in the world, and it has been insurmountable since ancient times, and I am here, there is no problem." Wang Kui also walked up, stood on the big stone, stood side by side with the eldest grandson Hong, and blew the cold wind outside the valley: "It's you, really want to take this risk and attack Hanzhong?" ”

He paused, and said with a worried face: "We can fight here, it is enough to ensure the safety of Chengdu, and the heavy gathering of the Mongols in Hanzhong is not so easy to get." ”

The mountain breeze was cool, blowing on the clothes of the two, and there was a sound of thunder.

Changsun Hong flicked the head on his head and smiled: "Big brother, the three passes of the five states can't keep Sichuan comprehensive, a small sword gate, it's rare to really be able to keep the Mongolian soldiers out of the gate?" You're underestimating them too much! ”

Wang Kui frowned and said nothing.

"If you defend a place, this place will be lost sooner or later, no matter how good you are, you will eventually be defeated, this is the fundamental decision of not wanting to make progress in thought, not to be diverted by human consciousness." Changsun Hong's eyes looked at the mountains in the distance, clear as water, and the mountains meandered along the horizon, extending to the horizon, and his sight was at the junction of heaven and earth, staying for a long time.

"Therefore, the defense must be dynamic defense, not stubborn, the current overall situation is a stagnant water, it seems that the two sides are safe and sound, the well water does not violate the river water, everyone has a peaceful life, hello, I am good, everyone."

"Actually, otherwise, the Mongols are ambitious, sooner or later they will go south again, now it is just because of the internal strife, no intention to look south, if we don't seize the opportunity, in this stall to lay down a favorable situation, then when the north captives free up their hands, we regret it too late!"

"And Hanzhong, looking at Guanzhong in the east, controlling Longxi in the west, remote earthquake in Tibet, facing the Qinling Mountains and the desert steppe in the north, as long as there is a strong army here, all the forces of the Mongols in the upper reaches of the Yellow River will be shaken, when Hanzhong was still in the hands of the Great Song Dynasty, big brother, think about it, is it that the Jin State wants to make some movement on the other side of the Huai River, and you have to weigh whether there will be an accident in Guanzhong?"

(End of chapter)