"The danger is natural, otherwise it will not work if it is thrown on the head of the Mongolians." Changsun Hongdao reached out and carefully uncovered the lid of the wooden box.

Wang Kui stood beside him, unconsciously moved two steps outside, and said with lingering fear: "The gunpowder field outside Chengdu City was blown up twice because of the making of this thing, and dozens of craftsmen died, and the whole city was alarmed. Later, he learned his lesson and moved the field to a place about ten miles away. He strictly carried out the manufacturing process and prohibited uneasy rules. This explosion accident was missing."

He stared at Changsun Hong's movements, his body was tense, and he was moved: "Second brother, I spent a lot of money for this thing. No craftsman is willing to do this. Everyone understands that this thing takes human life, not only the lives of the Mongols, but even the lives of his own people if he is not careful during the manufacturing process. In the end, I paid ten times the wages and promised high pensions, and then the craftsmen were recruited."

"It's worth it, it's worth it, everything is worth it." Changsun Hong paid attention to the movements in his hand, and slowly found a round and dark thing from the box. It was as big as a small watermelon, and it was iron all over, like a round lump of iron.

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

"Don't be nervous. The iron thunder is now stable. It's not so easy to explode if it is not ignited. Don't worry." Changsun Hong held the watermelon in his hand and played with it. The iron thunder was round and had a small hole, with a fuse sticking out inside.

Changsun Hong looked over and over again, gently pulled the fuse, and weighed the entire thunder in his palm to see the weight.

Wang Kui was frightened and took two steps back again.

"It's not bad, I just don't know how powerful it is. Take some time to try it." Changsun Hong put the iron thunder back into the box, stretched his head and looked at it. There were six of the same iron thunders inside, wrapped in dense straw, and stayed quietly in the wooden box. The shock and bumps during transportation had no effect on them.

"Then you have to find a wider place. This thing can create a pit that is ten feet a square foot when it explodes." Wang Kui reminded him.

Changsun Hong covered the lid of the wooden box and asked again: "Brother, how much can I give to me in a month now?"

"If you have enough power, there will be six hundred." Wang Kui thought for a while and said, "Twenty a day."

"Too few." Changsun Hong frowned: "Didn't the Song Dynasty use firearms very long ago? There are firecrackers everywhere, how can they produce twenty ones a day?"

"Your firearm is completely different from the Dasong firearm, right?" Wang Kui smiled bitterly: "Not to mention that the gunpowder inside is very troublesome and the structure is different. The Dasong thunder only smokes and does not explode. Your thunder is about to explode, and the firearm craftsmen have to grop. It is rare to have twenty ones a day when they first come into contact with it."

Changsun Hong looked at him and knew that what Wang Kui said made sense, so he had to nod helplessly.

The history of the use of firearms in the Song Dynasty can actually be traced back to the end of the Tang Dynasty, and rockets and fireballs appeared in battle. Li Gang of the Northern Song Dynasty used thunder cannons on a large scale when defending Bianjing. The firearms were spread to the Jin Kingdom during the Song-Jin War. The Khitans also used it as a weapon in large quantities. The Mongols besieged Kaifeng, and the Jin people used the thunder from the Southern Song Dynasty in the battle to defend the city.

During the reign of Emperor Gaozong of the Southern Song Dynasty, the bamboo pole musket invented by Chen Gui marked the first time that the weapon in charge appeared on the world stage. Although it was not promoted due to the many shortcomings in range, power and safety of the bamboo pole musket that ejected flames, its appearance laid the foundation for the emergence of the Lizong Dynasty decades later.

In other words, specifically when Changsun Hong was in the era when you were in, the Song Dynasty firearms were still at the stage of using the flames and heat energy generated by the spraying of gunpowder gas itself to kill or scare the opponent. The complete form of the firearm - the huge force generated by the spraying of projectiles was used to push the huge force generated by the spraying of projectiles to kill the enemy. There was also a layer of window paper that had not been pierced.

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

Changsun Hong could only come up with an idea, draw some drawings that he could not understand well, and provide references to craftsmen in military weapons prisons. Many times, Changsun Hong talked in a long time, and the group of people who were listening below were still staring at him like a fog.

This is a huge difference in concepts. Changsun Hong is not an engineer in the arsenal, and he can't make it clear. To be specific, professional military workers have to be asked to be considered, Changsun Hong is obviously not.

He can only propose concepts and only God knows what he can do.

Fortunately, the iron thunder in the box is still gratifying. The wisdom of the ancients should not be underestimated. The craftsmen of the Chengdu Military Arts Supervision can understand Changsun Hong's ideas and put it into reality, and create iron thunder that can explode like a grenade. Changsun Hong can be satisfied.

"Brother, this Guan Building will be completed in about a month. Compared with the old Guan Building that was pushed down before, it is not only tall, but also much stronger, enough to serve as a barrier." Changsun Hong led Wang Kui to patrol the construction site, and people came and went, busy.

The ground was covered with stones, tools, ropes, etc. The two of them walked along the ground, and pointed at the high ridges that were inserted into the sky like sharp swords on both sides.

"Indeed, the ridges on both sides are unattainable, and the terrain is high. If another sluice gate is built here, it will store water normally and open the gate to release water in critical situations, which will be enough to wash away tens of thousands of soldiers." Wang Kui nodded in agreement, looked up at the mountains on both sides and felt that his neck was sore.

"Plus, Tielei, brother, you are here, you can be a man who is a pass and can't open it." Changsun Hong walked to the front of the pass, which had not been built yet, stood on a stone, and was at the steep slope in front of the pass. Looking down from here, the open terrain outside the pass was unobstructed.

"The world's majestic pass of Jianmen Pass has been difficult to overcome since ancient times. I am here, so there is no problem." Wang Kui also walked up, stood on a big stone, stood side by side with Changsun Hong, and blew the bitter wind outside the valley: "How come you really want to take this strange risk and attack Hanzhong?"

He paused and said with a worried look on his face: "We can fight here, which is enough to ensure the safety of Chengdu. It is not so easy to gather heavy troops from the Mongolians in Hanzhong."

The mountain breeze was cool and blew on the clothes of the two people, and the thunder hunting sounded.

Changsun Hong plucked the head on his head and smiled: "Brother, the three passes of the five prefectures cannot be kept in Sichuan. A small sword gate is rare to really block Mongolian soldiers from the gate? You underestimate them too much!"

Wang Kui frowned, without saying anything.

"If you defend one place, you will sooner or later lose it. No matter whether you are a good general like a cloud or a soldier like a sea, you will eventually be defeated. This is the fundamental decision of not being enterprising in your mind, and it will not be diverted by human consciousness." Changsun Hong looked at the continuous mountains in the distance, as clear as water, and the mountains winded along the horizon and extended to the horizon. His sight was at the junction of heaven and earth, and he stayed for a long time.

"So, defense must be dynamically defended and should not be held steady. The current situation is stagnant. It seems that both sides are in a safe state. The well water will not violate the river. Hello, everyone will live a peaceful life."

"In fact, the Mongols are ambitious and will go south again sooner or later. Now it is just because of the internal strife and no intention to look south. If we do not seize the opportunity and make a favorable situation at this stage, then when the Northern Barbarians are freed up, we will regret it too late!"

"And Hanzhong, looking at Guanzhong east, controlling Longxi west, shaking Tubo from afar, and looking at the desert grasslands across the Qinling Mountains in the north, as long as there is a strong army here, all the Mongols' forces in the upper reaches of the Yellow River will be shaken. When Hanzhong was still in the hands of the Song Dynasty, think about it, is it that the Jin Kingdom who wants to make some noise on the Huai River, and they have to consider whether something will happen in Guanzhong?"
Chapter completed!