Liu Hongji really had nothing to say. After hearing Li Ji's words, he also felt that it was useless to keep the city wall. If he really encountered an army with such a long-range attack force, the city wall would be powerless to stop the enemy except for restricting his own people from escaping.

Of course, he also thought that at worst, when you come to beat me, all my people hid under the city wall, so that would be fine? Just like when dealing with scribbling before.

But when I thought about it, he felt something was wrong again, because the largest city in the Tang Dynasty was Chang'an City, but how big is Chang'an City? It's more than 9,000 steps long and more than 8,000 steps wide. So can the cannon not hit this side and can't hit the other side? Is it okay to drag the cannon under the city wall to hit the other side?

Thinking of this, Liu Hongji stopped saying anything, smiled bitterly and shook his head and said to Li Ji, "Is there anything more cruel? Let's talk about it together."

"Guns, we have a new batch of guns here, with a range of 400 steps. What do you think? And the firing rate is very fast, so you don't have to stuff gunpowder into it like before, and then stuff iron sand." Li Ji said with a strange smile.

"A gun with a range of 400 steps? This thing..." Liu Hongji no longer knew what he should say.

As far as he knows, the bow with the farthest range may be able to shoot four hundred steps away, but that must be specially made. If a normal bow can shoot two hundred steps, it can be considered to be extremely powerful. Even a crossbow does not have such great power.

The Tang Dynasty is gradually becoming stronger and becoming unknown.

Liu Hongji suddenly realized that he didn't seem to have a good understanding of his country.

The changes in the Tang Dynasty over the past few years can be described as rapid changes. Those huge machines have made the work that had previously required many people to work for a long time simple. Just move the operating lever and everything is completed.

Human power has been defeated again and again in front of machines. These are situations that have only occurred in recent years, but they are enough to change people's views.

...

At the same time, the great Emperor of Tang Dynasty was also surprised.

"Has the six thousand step cannon been developed?" Looking at the calm son in front of him, Li Er felt a toothache.

What cannon can hit 6,000 steps? Or can it hit targets that are beyond 6,000 steps. So is it still called a cannon?

"Father, six thousand steps are the limit. Without major improvements in materials, there will basically be no more advanced Zhenguan Cannons within ten years." Li Chengqian's expression was as plain as he said, as if he was talking about what he had had for dinner last night.

But Li Er couldn't accept such reality. Seeing Li Chengqian's calm look, the old man became more and more angry the more he thought about it. Finally, he couldn't help but scold: "Six thousand steps are not enough, what else do you want to do?!"

"Father, if we have enough technical support, we can attack Japan from Xi'an." Li Chengqian said in his mind, but his mind was thinking about the "big killing weapons" that could fly over half of the earth in later generations.

Unexpectedly, the old man hesitated and was silent for a while before he said firmly: "No, six thousand is enough. Don't do this in the future."

"Why, why?" Li Chengqian asked in confusion.

"No, six thousand is the level limit, so you don't need to continue researching it." Li Er glared at his son and then said: "From the future, this number will be used as the standard. As long as any weapon has a range of more than six thousand, it will be over the system."

What? Li Chengqian's eyes were glaring.

There is no need for this? Is it necessary to get a cannon with a range of more than 6,000 steps to exceed the limit? Is it necessary to be so strict? When did the old man start to learn from the Braided Dynasty?

Thinking of this, Li Chengqian quickly explained: "No, Father, you can't do this. In the future, the power of this weapon will become greater and higher and the range will be higher and higher. Six thousand steps will not solve the problem at all."

Hearing Li Chengqian's explanation, Old Li was also angry and slapped the table and shouted: "You can solve it. I ask you, who do you want to hit with so many weapons? Now, except for ours, who else has the maximum attack range of weapons that can exceed 500 steps!"

"Uh..." Li Chengqian was stunned by the old man.

In fact, he himself doesn't know who he would hit if he gave him a DF now, because it's completely unnecessary.

In the Tang Dynasty, it seemed that five hundred steps was the limit. It was already bullying the cannon with a range of three thousand steps. Six thousand steps was equivalent to beating a child. If the range was higher...

Well, no matter how high the range is, it cannot even guarantee accuracy and communication cannot be contacted.

After all, the shells need to be corrected when they are fired. In later generations, there are walkie-talkies and satellites to contact directly. However, in the era when communications of the Tang Dynasty rely entirely on roars, no matter how far the range is, it is a big deal.

Thinking of this, Li Mu was not worried about going there. Six thousand is about six thousand. The old man was afraid of being bombarded in the middle of the night. Our family was also afraid. The Daming Palace was not very big in total. The cannon with a range of six thousand meters could be placed two miles away to hit the palace. For safety reasons, let's forget it.

...

But forget it, you still have to do something that needs to be done, such as the mortar, with smokeless gunpowder, that thing can be studied.

Anyway, the principle is very simple. It is a large bullet that uses the principle of free fall to hit the base fire, and then fires the thing and adds an alloy gun barrel. It is even simpler than that rocket launcher.

After listening to Li Chengqian's explanation, Tang Shanshi had already created the prototype of the shell, which was a large bullet. He took two days to arrange for people to make alloy steel gun barrels, and everything was done.

Li Chengqian had never thought that things would be so simple, so when he saw Xiao Tang ordering people to take out the so-called shell, he was stupid and stared at the round thing and asked, "I said Tang Shanshi, what are you?"

"A cannonball, as you said, are you a big bullet?" Xiao Tang said with confidence.

"Is this a cannonball? I'm looking at how it looks like an eggplant!" Cheng Chumo, who had already married back to Chang'an, took the round cannonball, put it in his hand and weighed it, and said in a depressed manner.

Although this guy is already married, he still looks reliable and has not made any progress. Seeing the shells flying up and down in his hands, Li Chengqian was so scared that he almost jumped out.

You know, although that thing looks like an eggplant, it is not a real eggplant. If it falls to the ground, if it is not good, it may send everyone present to the West.

Tang Shanshi was obviously scared by Cheng Chumo, but he didn't dare to shout it out, for fear of being distracted, so he accidentally dropped the "eggplant" on the ground.

(End of this chapter)
Chapter completed!