"This is clearly death!"

After Li Shimin said this unhappily.

Qin Fan nodded affirmatively:

"Are you willing to die?"

Li Shimin's face was inexplicable: "Brother Qin, I'm not a fool! Since I know that I am invincible, and if I go, I will die, so why should I go?"

"Is that unwilling?"

"I don't want to!"

Qin Fan spread his hands: "Look, aren't I a soldier who surrenders without a fight?"

Li Shimin said angrily: "That's because your assumptions are too harsh! If I had made a hypothesis, I would have surrendered without a fight!"

Qin Fan smiled and nodded, "Since you can do the same, why don't you do it?"

"The development of productive forces that I mentioned before is like practicing martial arts diligently and building divine soldiers."

"Do you know what makes the most of an archer?"

Hearing this, Li Shimin pondered for a moment and asked tentatively, "Hit a hundred shots?"

Qin Fan shook his head: "It's time to start!"

Hearing this, Li Shimin said, "You're not right!"

"If that archer has the reputation and strength to be able to shoot a hundred shots, then when he is ready to attack, he can naturally deter Xiao Xiao and terrify his enemies."

"But if he were just an ordinary archer, and even had just learned to draw a bow, then no one would be afraid of the bow in his hand."

"Naturally, there is no deterrent effect at all!"

When Li Shimin said this, Qin Fan asked rhetorically, "Then do you think Datang is this archer who has just touched the bow and arrow?"

Li Shimin pondered for a moment and said, "Datang naturally can't be a novice who has just come into contact with bows and arrows. But if you want to say that you will be able to hit every shot, it has not yet reached this point."

"At least in the first place, the Turks have repeatedly invaded my borders."

Qin Fan smiled: "So the Turks are gone!"

"Goguryeo, a small country, also dares to go south to plunder!"

"So Goguryeo is also about to die!"

"It's the Tubo in the west, Chen Bing is on the border, and it seems that he also has a plot against my Tang Dynasty!"

Qin Fan understood.

"Do you think the Tang Dynasty should send troops to Tibet?"

Li Shimin saw that his mind was seen through, so he simply said generously:

"If you are beaten passively, you will only make the people on the border suffer."

"In that case, why don't you strike first, beat him back, and subdue!"

"That's how you can become a ready-to-play archer as you said before!"

Qin Fan opened his mouth and said:

"If you want to fight, let's fight! It's just that Datang has repeatedly gone on expeditions, and the loss of people's power is not small."

Hearing this, Li Shimin also felt the same way.

"Yes, although the campaign against Goguryeo this time wiped out Baekje, it requisitioned a lot of people, and this year we will have to cut taxes to recuperate."

Qin Fan nodded: "When Goguryeo is destroyed, he will march to Tubo, and this two consecutive battles are really too much attrition!"

"On the other hand, Goguryeo is in the east, close to the ocean, and has a humid climate."

"In the west, Tibet has many basins and deserts, with a dry climate and an extreme shortage of water."

"Both are located at the easternmost and westernmost points of the Tang Dynasty. Both the climate and the environment are the exact opposite."

"Soldiers are easy to be unaccustomed to the soil and water, and even a long march can be physically and mentally exhausting!"

Hearing this, Li Shimin was a little shaken.

Because what Qin Fan said is not unreasonable.

Whether it is not adapted to the water and soil, or a long-distance march, the blow to combat strength and morale is very huge!

"Besides, although through the national debt, the treasury has some surplus."

"But whether it's building a dam or building a fleet, it costs a lot of money."

"At the same time, it needs a lot of manpower to support it."

"At this time, how can we send a large number of people

to ensure the logistics of the army."

Li Shimin nodded: "It seems that the matter of attacking Tibet still needs to be considered in the long run."

"That's right!" Qin Fan smiled, "The top priority is to develop productive forces!"

"So how do you develop productivity?" Li Shimin asked in passing.

"For example, the previous curved plow, and then the sweet potato potato, and the castration technique."

"These all increase productivity on different levels."

Li Shimin nodded.

"In that case, Brother Qin, you might as well come up with more similar things, so that the people of Datang can save more effort."

Qin Fan was speechless.

This Boss Li is just catching a sheep and killing him!

Qin Fan spread his hands: "No!"

"Gone?" Li Shimin was a little hard to believe.

"Even if there is, it can't be improved." Qin Fan said frankly.

Indeed, in the nearly a year of check-in, I have accumulated a lot of good things.

But many of these are unusable by Datang in a short period of time.

For example, the manufacturing technology of the train.

Such a steel beast, it is difficult for Datang to create it at all!

It was built, and there were no supporting rails or a matching power system!

It can't be like Cixi, horse-drawn carriage, right?

So in the final analysis, if you want to develop various industries and make Datang's productivity have a further leap, you need to carry out scientific and technological innovation!

"The most important thing for Datang now is to increase the production of steel."

"And steel, in addition to the technical requirements, is also in great demand for iron ore and coal mines."

"So the first step is to expand the production of coal and iron!"

Hearing this, Li Shimin nodded and said, "I can hire people to explore the mineral source and develop a few more iron ore and coal mines."

Qin Fan shook his head: "There are ready-made ones, why do you need to do more?"

"But most of the existing iron ore mines are already operating at maximum efficiency."

"Even if you have enough manpower, you can only mine it with that efficiency."

Hearing this, Qin Fan asked, "How did you mine it?"

"How?" Li Shimin couldn't help but be stunned, does this still need to be asked?

"Naturally, it's a hammer and a pick!"

Qin Fan shook his head and said, "In this way, no wonder the efficiency is not high."

Li Shimin frowned: "Then what else can I do? The ore is buried deep in the ground, and the stones on it have to be chiseled apart piece by piece to get a small amount of ore."

"Don't bother! The gunpowder is ready to explode!"

Hearing this, Li Shimin was stunned for a moment: "Gunpowder?"

"Not bad! Gunpowder."

Qin Fan thought for a while and explained:

"Since the Qin and Han dynasties, successive kings have often ordered alchemists to refine pills in order to live forever."

"And some alchemists will explode, the furnace will be exploded, and the house will be destroyed and people will die!"

"This gunpowder is a by-product of the alchemy of those monks for the king."

Hearing this, Li Shimin's cheeks were slightly hot.

Because I also have someone to do alchemy, it's just that I'm still young now, and I don't eat it often!

"So this gunpowder can be used to blow up mines?"

Li Shimin subconsciously pulled the topic back to the effect of gunpowder itself.

And Qin Fan didn't dwell too much on the matter of the king's alchemy:

"Yes, as long as it is used properly, it can improve efficiency and reduce mining costs."