"Your Majesty, we don't sell technology, we only sell finished products." Wei Renshi said to Li Shi: "At least for a long time, let them use cement, not make cement." Now the cement ministers are ninety percent sure, and they can't do it except for Datang. ”

"That's not going to work either." Li Shi shook his head and said, "I have seen the hardness of the walls made of concrete, and I already know the reinforced concrete in the armory prison in the capital. I am preparing to ask the household department to start budgeting for the cost of replacing all the Chang'an city walls with reinforced concrete walls next year, and are ready to replace the Chang'an city walls. If cement is spread outside the territory, and other countries have also built cities with this law, wouldn't my Datang be the trouble I found for myself? ”

"Oh? Renovation of the Chang'an city wall? Wei Renshi was stunned for a moment, this was good news, and then said, "This is not a problem, Your Majesty." First, Wechen will only guide them to pave the cement road, and do nothing else. Second, even if they could draw inferences, although they had cement, they didn't know how to build walls with cement - because the walls of the city built with pure cement alone were actually easy to crack, and Wechen would not let them know the practice of reinforced concrete. Third, the weapons of our Datang siege are also constantly being improved and studied, maybe in the future, there will be no need for people to storm the city? We don't have to worry about what they do with cement! ”

Li Shi pondered, Wei Renshi knew that he was considering the pros and cons of doing so.

In fact, the management of weapons in ancient China was very strict. In addition to the government soldiers, ordinary ordinary people are not allowed to own weapons, and those who can wear weapons are generally the government, officers and soldiers, dart bureaus, and gentry. After Qin Shi Huang unified China, he collected the world's soldiers to gather in Xianyang, and sold the iron to cast iron, thinking that the golden people were twelve, and the subsequent dynasties followed suit many times. The people in the rivers and lakes in martial arts are not chic to go to the end of the world with swords, in fact, how can it be so easy? Wasn't it a fat beating and taken away by the officers and soldiers when they saw it? And it is even more impossible for ordinary people to have weapons, wasn't it the home of Chen Sheng and Wu Guang who took a wooden stick and hoeed their hair when they revolted? Later, in troubled times, due to poor management, everyone could cast weapons privately, but once the unification was over, the management of weapons was still very strict. Not only for the people at home, but also for foreign countries, it is much stricter than the people. Selling swords and soldiers abroad without permission is a big crime of killing heads, and the imperial court will also strictly control weapons to prevent them from flowing abroad.

However, seeing that the 100-steel-making weapons are now backward, if the 100-steel-making weapons can be sold, they can use the profits to produce and equip a large number of new weapons.

The huge profits brought by the 100-steel weapons business were enough to complete the weapons reform of the internal army of the Tang Dynasty.

The benefits of the arms trade are terrifying, and the arms exporting countries have been able to amass enormous wealth at a rapid pace.

But what Wei Renshi expected to see would be as simple as selling weapons to neighboring countries?

What Wei Renshi hopes to see is such a scene - after the Hui Hui purchased weapons from the Tang Dynasty, their strength rose sharply, and on the grassland, the neighboring countries, especially the Tubo, saw the increase in the strength of the Hui Hui and had a sense of crisis, so they followed the example of the Hui Hui and purchased a large number of weapons from the Tang Dynasty, and launched a fierce arms race in the grasslands and in the countries of the Western Regions, making them all arms importers, and making the Tang Dynasty pocket their wealth in their arms race. In this way, the Tang Dynasty has added a huge amount of wealth, and the fierce and long-term arms race will drag down a country's economy, causing its people to pay heavy taxes and suffer unspeakably.

In this way, the country is in turmoil, and it is time for the Tang Dynasty to step in.

Not only that, but Datang can also create a "Warring States" era in the surrounding countries of Datang through this move. Whoever is strong will have more export restrictions, and who is weak, then relax some export restrictions, so that they can stalemate with each other.

That's technology monetization!

"Your Majesty, you also saw those things just now. These eunuchs sold a hundred steels for a hundred and fifty pieces! At that time, if the imperial court sells weapons, the large amount can be cheaper, and it can also be a hundred handles. One hundred, enough for Datang to make another forty or fifty new weapons. Using a eliminated weapon in exchange for forty or fifty new weapons, this account is a good deal! ”

"So Weichen said that it can be counted in one fell swoop." Wei Renshi continued to persuade: "Sell those obsolete steel-making weapons that are not used, and exchange more money for Datang, this is also a gain; Datang got this money, which could be used to develop and improve new weapons, manufacture equipment and popularize new weapons, and so on. In addition, there is another achievement, that is, it triggers an arms race among the countries surrounding the Tang Dynasty. ”

"An arms race?" When Li Shi first heard this new word, he was stunned, thought about it, seemed to have some understanding, and said: "Soldiers, soldiers, soldiers, preparers, equipped, armaments are those who are equipped in the army." Competitors, contests are also ...... The contest of equipment in the army...... Tubo is the same as Hui ...... Both of them want to buy weapons from my Datang to strengthen themselves, and when they see that Tubo is strong, they buy more weapons to be stronger than Tubo, and when Tubo sees that they are strong, they buy more weapons to cover Huifu...... In this way, the wealth of Hui and Tubo will be in my Tang pocket! As for Hui and Tubo, they only got some broken copper and iron that my Datang had already eliminated! What Wei Qing said, but as calculated as I thought? Let's talk to me carefully! ”

Wei Renshi secretly said in his heart that this Li Shi is really not stupid, and he can guess that the arms race is such a way to drag down the enemy's economy through just four words.

In fact, launching an arms race around Datang is better than the protracted arms race in later generations, and it is more in line with Datang's interests.

Because the two sides of the arms race in later generations are each a superpower, they have improved their military technology and strength through the arms race, but correspondingly, to carry out the arms race, it needs to be developed, supplemented, and accumulated, which requires a lot of resources and money. So while carrying out an arms race, it has also dragged down its own economy.

And Datang is different this time.

Datang triggered an arms race in other neighboring countries through arms exports, causing neighboring countries to scramble to buy weapons from Datang, which ultimately dragged down the economies of those countries engaged in an arms race, and Datang instead gathered the wealth of other neighboring countries to Datang in their arms race.