I think back then, Daqin played like this, Daqin's Qin crossbows and bows are famous all over the world, although there is the credit of crossbows, but in fact, it is inseparable from Daqin's early start to play assembly line to make arrows, which is a truth with firearms, no matter how awesome firearms are without bullets, it is a burning stick.

And Li Ke has now evolved the production of arrow shafts from the assembly line to the production of machine tools, which is not at all a level of efficiency.

When the time comes, just play with firepower coverage.

In fact, although the nomads use bows, but in fact they do not have many arrows, the arrows of the nomads are almost all cut out by the herdsmen themselves with knives little by little, regardless of how high the accuracy of such arrows is, even the efficiency is much lower, if there are craftsmen who specialize in making arrows in the Tang Dynasty, there are almost no countries like nomads.

Of course, there is almost no reason because everyone can do it, but it is also because everyone can do it, so they never want to advance technology, they always use the most primitive solution.

In terms of arrows, iron arrows are very few, although most of the iron arrows can be recycled, but recycling is always the exclusive condition of the winner, and the loser has no right to recycle, so the arrows are also in constant attrition.

In addition, the nomads themselves have little iron, and most of the iron they are reluctant to use to make arrows, and most of the arrows are made of stone, bone, and animal teeth.

"Oh? Tell me more about it. Li Shimin looked at Li Ke and asked.

"In fact, my craftsmen have already started to develop large-scale steelmaking technology." Li Ke shocked Li Shimin with a word.

Steel and iron are two concepts, if it weren't for the appearance of Li Ke, iron would be very difficult to smelt in Datang, and it is strictly forbidden to sell it in large quantities to the surrounding nomads. Li Shimin didn't think that this thing could be smelted on a large scale.

"Are you sure?" Li Shimin was a little incredulous.

"Of course, according to the current improvement progress of craftsmen, it will not take long to complete, although it cannot be as fast as smelting pig iron, but at least it is much faster than the current progress, and most of the weapons of Datang's soldiers can be replaced with sharper steel knives, and even armor can be made of steel." Li Ke nodded.

"Now it seems...... You, the honor system of a craftsman, really didn't do anything wrong! Li Shimin sighed with emotion, how long has it been, and these craftsmen have made so many achievements.

"Of course, there is a second step in this." Li Ke said with a smile.

"The second is that the amount of materials imported into Tibet is actually strictly calculated, that is, if the Tibetans are immersed in attacking and plundering Tianzhu and other countries, they will soon fall into a vicious circle."

"Because the invasion will bring one point, that is, with the system of Tibetan slavery, after plundering and attacking Tianzhu and other countries, it will be opposed by the local people, and will erect its own enemies, in this process, if the Tubo wants to maintain its absolute superiority in terms of troops, it must buy more iron weapons and more materials to expand its combat strength."

"However, the amount of gold, silver and other things that the retainers need to sell materials in Tibet is limited, and if they want to buy more, they need to grab more gold and silver, and the gold and silver they have stolen can only be exchanged for materials to maintain their rule, and they need to continue to grab if they want to expand."

"More importantly, in this process, Tibet will show a false prosperity, because all the wealth of Tibet is in the hands of the aristocracy, and the entire slaves at the bottom will not change anything, when the nobles have some funds in their hands, they will gradually engage in extravagant consumption, that is, to buy expensive silk, food and other materials."

In this process, all the Tubo nobles will feel that they are living better, and they will rely more on the Tang Dynasty, and the prerequisite for relying on the Tang Dynasty is to draw the blood of Tianzhu and other regions and deepen the contradiction between Tubo and Tianzhu. This contradiction made Tubo even more afraid to be hostile to the Tang Dynasty. ”

"At the same time, it is also weakening Tubo and Tianzhu at the same time."

"In the later period, there will inevitably be a large number of damaged armor, arrowheads and other iron tools in Tibet, but Tubo lacks enough craftsmen, so Erchen can let them pay a sum of money to transport these scrap iron back, and Erchen will re-smelt and process them and collect part of the funds, so that we can make a profit again."

"This is a continuous process, in the whole process, the national strength of Tubo seems to have increased, in fact it is constantly weakening, and they have a biggest enemy is Tianzhu, after Tianzhu attracted the main combat power of Tubo, we can extract a steady stream of gold and silver in the rear, and after a few years, Datang can use gold, silver and copper coins to completely change the situation of existing silk fabrics such as silk and silk as currency. And if Tianzhu really can't bear it, the minister will sell weapons to Tianzhu through the Western Regions countries. Li Ke explained in detail.

In fact, this has already involved a higher-level proxy war, as well as economic control, if there is no Li Ke's Li Dai Taozhuang plan, in fact, it can also play the abolition of Tibet, but it will take a long time.

After having Li Daitao's plan, it means that Datang will just harvest in the back.

In fact, Li Ke has a more ruthless plan! For example, when the battle between Tubo and Tianzhu was confronted, the northern territory of Tubo suddenly rebelled, but the Tibetan nobles who were "loyal" to Songtsen Gampo in these territories led their troops to follow Songtsen Gampo, and the herdsmen in the north all "defected" to the Tang Dynasty.

In this case, Songtsen Gampo did not dare to fall out with Datang, and Li Ke "gave in" at the right time and provided him with a huge amount of materials, so that he could win Tianzhu and grab a larger territory in Tianzhu.

Compared to the harsh environment on the plateau, will Songtsen Gampo choose the more fertile Gangetic plain after weighing the pros and cons?

At that time, the entire Qinghai-Tibet Plateau will be returned to the Tang Dynasty, and the northern part of Tianzhu will be returned to Songtsen Gampo, and then step by step...... Cough......

But he didn't say it now, he said that Li Shimin may not believe it, and if Li Shimin believes it, it will be more troublesome, because Li Shimin believes it, then Li Ke can't go to the Western Regions again after the New Year! That's too miserable.

Li Shimin's expression was somewhat weird, to be honest, the methods involved in these strategies were simply unheard of by Li Shimin, mainly ...... If you think about it carefully, this is simply too ruthless, and what is even more terrifying than ruthlessness is that it is even more impotent! Once you step into it, you know you can't resist it.

With those nobles in Tibet who have little culture, they want to refuse? Can't refuse at all.

"Regarding these plans, you put forward them in detail in the court." Li Shimin pondered for a moment and said.

"Wait, father, this piece of music is not up to the minister." Li Ke shook his head quickly.

"Huh?" Li Shimin was stunned for a moment and looked at him suspiciously.

"I'll go to my eldest brother and let my eldest brother write it. This prestige is given to my eldest brother. Li Ke said with a calm face.

Li Shimin was stunned, and Chang Lin was also stunned.

"You say it again?" Li Shimin felt that he had heard it wrong.

"I said that this prestige is for my eldest brother to come, as a crown prince he needs prestige." Li Ke shook his head, "My reputation is actually quite a lot in Chang'an, although I have offended most of the gate valve time, and I am not afraid that my eldest brother will misunderstand, but if I continue to gain prestige, even if my eldest brother does not misunderstand, there are definitely people who stir up trouble, and there are a lot of people who separate the relationship between brothers and sons." ”

"So I have to do the prestige of my eldest brother to avoid villains stirring up trouble. It would be too bad if my eldest brother was cranky when the time came. Li Ke shook his head and said.

Li Shimin's expression was weird, although he was used to Li Ke daring to say anything, opening his mouth to rebel, closing his mouth to Xuanwu Gate or something, but this time Li Ke's words were not just about rebellion, but actually something.

"Do you really think so?" Li Shimin paused for a moment, and couldn't help asking, to be honest, Li Shimin really hesitated in his heart during this time, and hesitated whether to make Li Ke the crown prince.

"Or else? Do you think I want to be the emperor, you want to write me an abdication edict like last time, I won't stop it this time, you abdicate with the front foot, I will take the Zen position with the back foot, and then the eldest brother will be the emperor, and I will take you to the Qinglou to drink flower wine. Li Ke said with a smile.

Chang Lin: "...... My Royal Highness, the old slave has been comfortable for half a year, really, for half a year."