Soon, the ordnance superintendent sent someone to inform Li Shimin of the news about the invention of this cannon. And quietly said two words, that is, after the invention of this cannon, those veterans may be able to retire. Because of the invention of this cannon, the main force of future battles may be firearms, rather than the cold weapons of the past. And after Li Shimin heard that those veterans could retire, he didn't dare to slack off, so Li Shimin brought many generals to the test site of this weapon, ready to watch this artillery. And after these few days, Jingwen has mastered the dosage of that flying thunder cannon, so there is no need to worry about it. As for taking advantage of this time, Jingwen also specially researched a small cannon that could be used for small troops.

"Your Majesty, generals, you have come here, which means that you have witnessed the beginning of a new era. So, take a good look at the beginning of this new era that will surprise you! Jingwen said.

"Don't be so surprised, what the hell is it, let's see. You kid said that if these things were invented, those tactics of the past would be really outdated, and we should see if you have the ability to score points, and you can say that. Cheng Yanjin said.

And Jingwen immediately said: "Father-in-law, you can be regarded as fighting on the battlefield for many years, in the future, you should wait at home to tease your grandson, and then leave the battlefield affairs to us young people to do!" ”

"What? My old Cheng can still afford to carry an eighty-pound axe to fight the enemy, you say let me tease Sun Lao? Cheng Yanjin asked angrily.

And Jingwen smiled without saying a word, and led everyone to the front of the flying thunder cannon.

And everyone looks at this thick caliber flying thunder cannon and doesn't know what this thing is.

"Son-in-law, what is this?" Cheng Yanjin asked.

And Jingwen immediately said: "Father-in-law, if there is this case, no matter how strong the city wall in this world is, it is equivalent to nothing." In the future, we in Datang will actually not need to build a city wall. Because in front of this thing, any wall is also a meaningless thing. ”

"What do you mean by that?" Cheng Yanjin asked.

And Li Shimin also pointed to the distance and asked, "Jingwen, is this the city wall you imitated?" ”

"Yes, Your Majesty! This is based on the wall of Chang'an City, and then imitated, but this wall is only ten meters, not too big. This is mainly used to test the power of our cannon, and when the time comes, you can see the power of this flying thunder cannon, and you will know why I said that it is useless to build a city wall. Jingwen said.

Soon. Those gunpowder technicians are busy preparing for this to watch this flying thunder cannon show. The performance of this flying thunder cannon is very shocking, and even the most powerful of these cannons is the flying thunder cannon, Jingwen specially arranged it in the first scene, so it is to shock those veteran ruffians. If you don't let them know that the martial arts they have learned, that everything is outdated, I'm afraid they won't believe it at all.

"Boom!"

There was a loud bang, and the city wall three hundred meters away began to kick up a puff of billowing smoke, apparently shaken by the explosion. And Li Shimin still has those generals. Their ears were numb from the shock, obviously it was too loud for them to be clear. And a short time later, after the smoke and dust cleared. Jingwen took everyone over to see the results of this flying thunder cannon.

"Oh my God! The walls have collapsed by three percent! Li Shimin exclaimed.

In the distance, the city wall that simulated the city wall of Chang'an City collapsed by thirty percent, that is, one-third. And this is just the effect of a shot. This shocked Li Shimin enough. Li Shimin claims to have been a horse all his life, but he has never seen this situation. Usually the city wall of Chang'an City, ordinary catapults can not damage the city wall of Chang'an City. And even if it's Jingwen with explosive missiles. At least hundreds of missiles had to hit one place at the same time to have such an effect on the walls of Chang'an City.

Therefore, this is also the reason why everyone did not ignore the effect of the city wall. Originally, when Jingwen attacked Dingxiang City, the reason why the city wall of Dingxiang City was able to collapse was because the city wall at least one county level, coupled with the fact that the Turks did not pay attention to the city wall, so it fell into disrepair, which caused the missile to collapse. But now this is a simulation of the wall of Chang'an City, not a soft persimmon, but a third of it collapsed in one shot, which is too surprising.

And Jingwen was not surprised, because the caliber of this flying thunder cannon was more than 300 millimeters, although they were all ordinary and primitive black. Gunpowder, but this is also the formula that Jingwen arranged for Yuan Hua, a senior gunpowder technician, to optimize the formula, so the power is very huge.

Cannons with a caliber of more than 300 millimeters, even if it is gunpowder of later generations, are not inferior to a caliber of 100 millimeters, so it is completely possible to destroy one-third of the city wall of Chang'an City with one cannon.

"Your Majesty, you see, if we have this flying thunder cannon, then I'm afraid we won't have any city walls that we can't conquer in the future. All the walls that stand in our way will be destroyed by our thunderbolts. And those so-called fortifications can't withstand the bombardment of thunder cannons, so the emperor should know why I said that I don't need to build a city wall, right? Jingwen said.

"Long live my emperor, there will be no city walls that cannot be conquered in the future, then my Datang will definitely be able to sweep the world!" Soon, a civil official came over to pat himself on the back.

After all, these civil officials don't care what these military attaches who rely on martial arts to eat will further lose their status, they just think that with these weapons, the Tang Dynasty will be fearless, and no foreign race will be able to defeat them. And when the time comes, only oneself will defeat others, and others will not want to defeat themselves. This is the difference between the political family and the military family, once there is a change in the military, then those generals of the older generation will be forced to retire, after all, they are no longer needed.

And now Cheng Biting Jin and their faces are even more pale, originally they thought that missiles had been invented, but it will take some time for firearms to really squeeze them out of the army. But this flying thunder cannon just shows that the progress of firearms is getting faster and faster, and they can't keep up. These veterans, I'm afraid it's too late to learn firearms combat again, because their age can't keep up. (To be continued......)