Only a person like Songtsen Gampo, who has never seen high technology, would believe that 100 bronze cannons with barrels more than one zhang long and weighing more than 2,000 catties are new weapons used for experiments.

With gunpowder, a very high level of smelting, as well as Sun Xiangfu's guidance in the direction of research, and unlimited materials and manpower, used to do cannon casting tests, this thing with little technical content at all, was quickly formed and mass-produced.

Having money is superpower, and being able to do whatever you want with money is a theory that has been verified in later generations, so everyone who loses in the hands of capital is dead as it deserves.

Poverty is the original sin.

These bronze cannons, in fact, are not the best choice for Datang now, Marseille has long been a few years ago, has developed a lot of alloy metals that are tough enough to be used as cannon barrels, Datang can choose the lower cost, for mass production of this new weapon.

The reason why copper is used is because its stability is relatively good, it is not so easy to blow up, and the melting point is only about 1,000 degrees, which is about 500 degrees lower than steel, and it is simple and trouble-free to cast, and it is highly controllable.

Of course, it's still the old saying, Datang is not bad for money, it is easy to use and save trouble, and it is worth spending a little more.

The reason why it was made so big was because after Li Shimin saw the original artillery model, he felt that its lethality was still not shocking enough, and its power could not reach to crush the enemy.

Anyway, now Datang has ball bearings and rubber tire carts that can easily transport more than 2,000 pounds of cannon barrels.

Therefore, after the barrel is thickened and lengthened, its firing range is six or seven percent higher than that of the 'invincible general cannon' that was heavily equipped with military equipment in the Ming Dynasty in the fifteenth century, and the range of 500 steel balls can still reach nearly 100 meters, and the effective killing is also more than 70 meters.

After all, his overall mass is more than twice as strong as that of the 'Invincible General Cannon', and when the thickness of the barrel increases, the amount of gunpowder can be loaded more, and the length of the barrel increases, which increases its range.

If a single lead bullet is loaded at a 45-degree angle, it will hit farther, as long as it hits someone, it is effective killing, so far, the firing range is almost the same as the Hongyi cannon at the end of the Ming Dynasty, the effective firing range has reached nearly 500 meters, and the maximum firing range is 1,500 meters.

After all, the overall quality of this cannon is almost the same as that of the Hongyi cannon, and by the early Qing Dynasty, the Hongyi cannon that had been reformed by smoothbore had an effective firing range of 1,500 meters, and a maximum firing range of 2,500 meters. The guns mass-produced in the West for military use are different in caliber and barrel length, reaching a maximum range of 8,000 meters, 6,000 meters and 4,000 meters.

Moreover, the barrel of a cannon with a firing range of 8,000 meters is only one zhang long, which shows that the research and improvement task of the weapons research institute is still very arduous, and it needs great improvements from the casting of cannons to the ratio of gunpowder.

When he first saw these cannons, Songtsen Gampo thought it was a new type of siege vehicle, after all, the bronze cannon barrel that was more than a foot long seemed to him to be very good for hitting the city gates.

Therefore, he didn't understand why all the Tang Jun who controlled these things would wear a big cotton earmuff.

"Report to Your Majesty, the target has been set up, whether to start the shelling test." Dugumou, the commander of the Praetorian Guard, was wearing a combat uniform, and after seeing Li Shimin entering, he performed a standard military salute, and his voice was like a flood of bells.

"Start experimenting."

Li Shimin gave the order, and the chamberlain Wang Deyong immediately brought an earmuff and a pair of binoculars to Li Shimin with a tray, and the other courtiers also had it.

Of course, Songtsen Gampo didn't have it, and when Wang Deyong saw him, he just used an expression of surprise, and then, Songtsen Gampo was embarrassed to ask Wang Deyong for it.

After all, he was a person who blended in with the minister's crowd without Li Shimin's consent.

Now, he was just glad that Wang Deyong hadn't driven him away, but he didn't notice that after Li Shimin and the courtiers got the earmuffs and binoculars, although they were walking towards the center of the long row, the whole crowd was a few steps away from the rows of neatly arranged cannon barrels.

Then, Songtsen Gampo saw Dugu Mou, who had just reported to Li Shimin, waving the flag, and the next moment, he smelled the smell of fireworks, and the next moment, it found that his brain began to roar, and the tingling pain in his ears made him instinctively begin to cover his ears, but the sound caused the air to vibrate, making his chest feel stuffy, and the beating of his heart accelerated rapidly.

"Boom, boom, boom······"

One hundred cannons, firing alternately, Dugu Mou waved the red flag, the soldiers loaded loose bullets, Dugu Mou waved the black flag, the soldiers loaded the door with lead bullets, every time the flag was waved, the shells would be fired on time, and the corresponding target would also be shot in the next moment.

Li Shimin and a group of ministers, behind the artillery array, at a relatively high place, looked for the angle of the smoke that was not so dense, watched the effect of the cannonball hitting the target, and nodded again and again, no one noticed that Songtsan Gampo, who had been shaken by the terrifying roar, sat down on the ground, and his crotch was already wet.

It's totally pee-intimidating.

Not only because of the sound of artillery, but also because he saw some scenes of those wooden people and earthen walls dozens of meters away, crumbling and crumbling under the bombardment of cannonballs.

A quarter of an hour later, Li Shimin finally raised his hand to stop the shelling, it led the ministers to scratch the direction of the target, and after the whole venue quieted down, Songtsen Gampo finally found that his state was a little wrong, and while getting up from the ground, he used the hem of his robe to cover the position of the crotch of his pants, but he couldn't erase the wet stuff on the ground, and looked around awkwardly, and found that no one paid attention to him, so he quickly stayed away from here.

He was a ruthless man, his shocked ears kept ringing, but he still didn't give up, following the flow of people, bouncing, taking very unnatural steps, and walking into the target, and then he really felt the power of these cannons.

The targets nailed by those wooden stakes are all densely packed with holes made of steel balls, and even, many steel balls, are deeply embedded in the wood, if standing here is a person of flesh and blood, Songtsen Gampo does not dare to think down, if a person is beaten into a picture of holes all over his body, as long as he thinks about it, his scalp will be numb.

Then, compared to these piles full of holes that were beaten in the near distance, far away, farther away, those brick houses that were directly bombed into broken ground, brought him even more shock, from where he was now, the direction of the artillery array, it was already very blurred, however, those round ball shells, but they shattered layers of brick and earth walls, beams, and shattered everything.

A feeling of fear, from this moment on, was generated in Songtsen Gampo's body, and some of the images he imagined lingered in his mind.

Will the city of Logos, which he had carefully built after his ascension, be reduced to pieces like the ruins in front of him under such a round of artillery fire?

He feels bad now, it turns out that Datang can really easily destroy their Tubo, and he really doesn't care whether he surrenders or not.

"Well, that's right, it's only ten rounds, and all the targets have been destroyed to this extent, even if it's a thick city wall, I'm afraid it won't be able to low-grade its bombardment, let alone any flesh and blood." Li Shimin nodded with great satisfaction.

When he turned around and walked back, he suddenly saw Songtsen Gampo hanging at the end, and said with some surprise, "Why are you here?" ”

"Well, this, Your Majesty the Emperor, I think, we can still talk." Being watched by everyone, the crotch of Songtsan Ganbu felt very embarrassed, before, his demeanor and momentum in front of the Tang Dynasty ministers were completely gone, and when he spoke, everyone felt that his confidence was very insufficient, this is the effect of absolute crushing by force.

"Really? Have you decided to surrender to my Datang in accordance with the rules set by my Tang court? Li Shimin still walked out of the target area and said.

His powerful aura, which he didn't bother to look at at Songtsen Gampo, crushed the last bit of kingly bearing in Songtsen Gampo's body.

"Yes, yes!"

Hearing Songtsen Gampo's not very firm answer, Li Shimin just turned around and said to him with half of his face exposed, "I believe that the people of Tubo will be grateful for this wise decision you made today." ”

After that, he walked towards the outside of the shooting range again, and on the left and right sides of Songtsen Gampo, Fang Xuanling, Hou Junji, Duan Zhixuan, Feng Zhidai and other ministers also walked past him with a little smile, and in Songtsen Gampo's opinion, their smiles were somewhat arrogant.

"Let's go."

He was patted on the shoulder, this is a habit that the eldest grandson Wuji learned from Sun Xiangfu, Sun Xiangfu is good at patting people on the shoulder.

When Songtsen Gampo turned his head, what he saw was Changsun Chong, who was covering his nose with one hand.

"Songtsen Gampo, according to the rules, you should give a big gift and thank you now, but Your Majesty has now gone far away, so you will be exempted, but I have to remind you that Your Majesty gives you a chance to surrender to the Tang Dynasty, which is a great gift, you deserve it, Your Majesty will naturally reward you, as for what Your Majesty has not rewarded you, you must not think about it." Saying that, Changsun Chong also quickly opened the distance between him and Songtsan Gampo, because Songtsan Gampo, which eats beef and mutton as the staple food, has a very bad smell of urine spilled.

"Well, can I ask, who am I going to talk to about this matter after?" Songtsen Gampo felt that he had lost all his face for the rest of his life today, but he still didn't forget to get down to business.

"In our Tang Dynasty, the Ministry of Rites is in charge of foreign affairs, under the banner of the Ministry of Rites, there is a new yamen dedicated to managing the affairs of the submission of the Fanbang, called the Li Fan Bureau, you put the geographical atlas of Tubo, the number of cities, tribes, and people under its jurisdiction, as well as the number of begging for surrender to my Tang Dynasty, to the Li Fan Bureau, and they will arrange all the next handover matters, including the reward you will eventually get, are subject to their surveyed contributions.

At present, you Tubo is the first Fanbang Kingdom approved by His Majesty to be incorporated into my Tang Dynasty, and the treatment should be favorable, if there is anything you don't understand, you can ask the officials at any time, however, I advise you to go back and wash up first, change your clothes, and then go to them. ”

"Reason? A five-grade government office? Could it be that I, a kingdom with a population of one million and a territory of thousands of miles, surrendered to the Tang Dynasty, and only needed to negotiate with a courtier of the Tang Dynasty to make a decision? Songtsen Gampo explained.

Changsun Chong, who had already opened a distance of more than ten meters from Songtsen Ganbra, turned his head and said lightly, "Look at the Persian Dynasty, which has a population of 15 million, and how obedient the Tianzhu Dynasty is to my Tang Dynasty, your heart should be balanced." ”

Hearing Changsun Chong say this, Songtsen Gampo opened his mouth, but he didn't make a sound.

The Persian Sassanid Dynasty and the Tianzhu Ring Sun Dynasty are not as deferential as kittens to the Tang Dynasty now, with the volume of the Lingnan fleet, if they continue to transport at the current pace, I really don't know how many years their dynasty can last.

Because, the Persians are helping Li Tai to get the Tianzhu people, and the big cannibals are helping Li Tai to get the Persians, there is no way, who is called Boshi has a large population, and the national defense is very weak!

Now, they can only pray for Lee Tae to stop at the source.

Because, many of their own people, in order to come to Datang, actually took the initiative to be arrested and sold, they have reliable information in their hands, and going to Datang to be slave laborers is also better than starving and eating a full meal in their own country, and they are not sold by others, they may not have the ability to go to Datang on their own.