Li Shimin is also a person who is accustomed to seeing strong winds and waves, and he has a deep understanding of the words "sinister people's hearts", but after he became the emperor, those who dared to be "sinister" to him have basically been killed by him, and Wu Qingli is an exception.

Looking at Gao Ming standing below, after Li Shimin sat down, he suddenly rubbed his temples a little tiredly.

"Gao Ming, you don't care about these little things in the future, and make that cannon for me, this is the most important thing."

For Li Shimin, the death of a few palace maids and eunuchs can indeed only be regarded as a trivial matter, and compared with this kind of thing, it is more important to build a cannon to attack Goguryeo as soon as possible.

Seeing that he was a little tired, Gao Ming suddenly smiled slightly, and then came behind him, and laughed while helping him pinch his shoulder.

"Isn't this also for your own good, okay, let's not talk about this, let's talk about another thing, I think it's better to let girls remarry at the age of sixteen, we should include this in the Tang Law, don't you say?"

Li Shimin: "......"

Damn, Datang Law is up to you? You can add as much as you want?

As an out-and-out feudal emperor, Li Shimin is very urgent about population growth, and in his opinion, delaying the age of a girl's marriage will delay the birth of a newborn, which he cannot accept.

If someone else had put forward such an opinion to him, he would definitely have rejected it directly, but now it was Gao Ming who put forward this opinion, and in order not to discourage Gao Ming's enthusiasm, he could only be vague.

"Let's talk about this later!"

Hearing Li Shimin's words, Gao Ming immediately understood that he must be unhappy, so Gao Ming hurriedly persuaded him.

"Old man, I know you want the population of Datang to grow rapidly, but the girl is too young to get married, and she has not grown up yet, if she gives birth to a child, not only will she be in danger of being killed by one corpse and two lives, but the child she will give birth to will be physically and intellectually defective."

"I know!"

As soon as Gao Ming's words fell, Li Shimin nodded.

"I know all this, but if I don't do this, I'm afraid that my Datang will have no one to use in the future!"

Hearing Li Shimin's statement, Gao Ming immediately laughed.

"Actually, you don't have to worry about this problem at all, first of all, my Datang now has a population of more than four million households, and the number of people is nearly 20 million, even if it is stipulated that girls cannot marry before the age of sixteen, it will not have much impact on population growth, and besides, have you forgotten the technology I mentioned to you before?"

"Technology? You're talking about cannons? ”

Hearing that Li Shimin's first reaction to science and technology was a cannon, Gao Ming was suddenly a little embarrassed, but he still nodded.

"It can also be understood in this way, because once a weapon of war like a cannon is created, then the lives of my Datang soldiers will be guaranteed, and more soldiers will come back from the battlefield alive at that time, so I think you should think about what to do if the population grows too fast."

"This ......"

Obviously, Li Shimin has always been worried that it is the problem of insufficient population, and as for the problem of too many people, he really has not thought about it.

Based on his trust in Gao Ming, Li Shimin frowned and thought for a while, and then nodded.

"Well, if you can build a cannon, then don't talk about such a trivial matter as making a woman marry at the age of sixteen, even if it is a bigger thing, I will promise you!"

As soon as Li Shimin's words fell, a small figure suddenly jumped out from behind the screen.

"Father, this is what you said, when the eldest brother builds the cannon, he will cancel the relationship between the son-in-law and that Duan Qiang!"

Looking at Li Shimin's anxious look, Li Shimin couldn't help laughing.

"Yes, I agreed, as long as your eldest brother can build a cannon that can not only defeat Goguryeo, but also save the lives of my Tang soldiers, I will not care about your family affairs in the future, and even if you can't get married, I won't care!"

As he spoke, Li Shimin stretched out his finger and doted on Li Mingda's little head, looking at her coquettish appearance, he laughed again.

It can be seen from this that for Li Mingda's daughter, Li Shimin's heartfelt love.

Looking at the happy scene of the father and daughter in front of him, Gao Ming also understood that his task had been completed, and he immediately bowed to Li Shimin.

"Old man, I have already ordered someone to find a blacksmith, I will go back now to make the drawings of the cannon, and as soon as the people arrive, they will start manufacturing, if it goes well, it will be built in less than three months!"

Hearing Gao Ming's part, Li Shimin suddenly became even happier.

"Okay, from today onwards, Gao Ming, you will concentrate on building this cannon for me, I can't wait to see how powerful this war weapon is in your mouth."

"Then you'll have to wait and see!"

After speaking, Gao Ming arched his hand towards Li Shimin again, and then turned around and walked out of the imperial study and went back to the East Palace.

After returning to the East Palace, Gao Ming plunged into his study, picked up a pen and began to write and draw.

The cannon designed by Gao Ming is the earliest breech gun, which is also the earliest smoothbore gun, after all, with the level of craftsmanship of the Tang Dynasty, it is impossible to make a rifled gun, so he can only retreat to the second.

The structure of the smoothbore gun determines that its muzzle cannot be too large, otherwise it will have to increase the volume and barrel length to increase the hit rate and power, just like the Hongyi cannon introduced from Europe in the late Ming Dynasty, with a length of three meters and a caliber of more than 100 millimeters, it weighs more than two tons!

And what Gao Ming is now drawing on the drawings is the Hongyi cannon!

"Damn, although the Hongyi cannon is a little bulky, but the range of Ya is long, the effective range of 500 meters alone can make those Goguryeo sticks completely dumbfounded, wahahaha......"

In order to ensure that the iron cannon does not explode, Gao Ming also specially designed twelve iron hoops on the barrel, and at the same time thickened the thickness of the barrel of the cannon.

Although the weight has increased, for the sake of safety and practicality, Gao Ming has no intention of changing his mind.

"If the two horses don't move, it's a big deal to use four horse-drawn carts, even if there are a hundred cannons, it's just four hundred horses, it's a small meaning!"

Thinking of this, Gao Ming's heart suddenly moved, and he simply increased the barrel of the cannon to five meters, and the caliber of the cannon also increased to two hundred millimeters accordingly, and the thickness of the barrel and the iron hoop also increased accordingly.

Gao Ming didn't feel that there was anything wrong with his design, after all, the breech gun, the technical content was just like that, and when the time came, it would be nothing more than a little trouble to load and clean up, and nothing else was a problem.

After the design was completed, Gao Ming roughly calculated that the weight of this "enhanced version" of the Hongyi cannon is likely to exceed six tons!

After discovering this, Gao Ming immediately smacked his mouth.

"Tsk...... Good guy, if you build one of these things, you can make three other cannons, but it's definitely more powerful! ”

Speaking of this, Gao Ming suddenly slapped his face.

"Okay, that's it, Lao Tzu named it Super Shenwei Invincible Fortress Cannon Enhanced Type I, well, this name is simply superb......"

Thinking of the shock that the cannon he involved would bring, Gao Ming was quite complacent at this time, and he suddenly thought of the famous "warlord poet" Zhang Zongchang's "Song of the Great Wind".

"The cannon is bombarding his mother, and Weijia Hai is returning to his hometown......"

When Gao Ming couldn't help reciting this poem, there was a sudden "poof" laugh at the door.