Capacity will come up after all, and after finding the right way, no one can stop this.

After returning to Chang'an, Cheng Zhijie got the test data as he wished.

This data was not ordered to be tested by Li Yuanji, but he personally went to ask for ten trucks, and then threw five of these ten trucks to the logistics department, and five to the forbidden army, so that they could simulate the experiment.

This result is what Cheng Zhijie wants most, and at the same time, this result will also imply that the military department decides how many trucks to purchase.

Looking at this data, Cheng Zhijie ......

Li Yuanji looked at Cheng Zhijie in surprise, and secretly asked if this thing's brain was broken, if he didn't understand some of Cheng Zhijie's temper, he would definitely think so.

Well, with all the good reason, everything seems so seamless.

But now, when you're just getting started, you're telling me about the standard?

The distribution plan is very simple, that is, one truck for ten people, and Datang now has nearly 900,000 troops, that is, 90,000 trucks are needed alone.

This figure is relatively conservative, and Li Yuanji can't find any reason to refute it.

Under normal circumstances, one truck can easily fit two squads of twenty-two fighters, and if you squeeze some, three squads will not be a problem.

The reason why it is said that it is ten people and one is to take into account the problem of logistics, but logistics takes time, which has virtually increased a lot of vehicles, so on the whole, ten people and one unit is the most reliable data, and it can ensure that the troops will fight in any area, and there will be no supply crisis and other problems.

"According to the current output, 90,000 units of the military department alone is enough for the machinery factory to work for four years, do you think I will agree?" Li Yuanji asked with a little playfulness.

"Of course Your Majesty will agree, and besides, the minister is not saying that he should be equipped immediately, but with this as the goal, he will fully reach this stage in the next five years." Cheng Zhijie nodded affirmatively, a look of innocence, I especially believe in your evil, but this product doesn't care at all, and still says with a self-centered attitude: "The machinery factory can actually start to expand now, and after the plant and equipment are in place, the existing workers will be enough to support the new production line."

Besides, although the machinery factory is related to the military, it also plays a vital role in people's livelihood, just like His Majesty said before, to place the parts factory in other places to give some hope to the people in other regions.

After thinking about it again and again, he found that what His Majesty said was very reasonable, so he thought again, since it is possible to establish a machinery factory in Chang'an, why can't it establish a machinery factory in other regions? The Central Plains is still very important, and the population there is also very large.

Moreover, Luozhou is still the eastern capital, the dignified Tang Dongdu, as the existence of the accompanying capital, there is no advanced industry such as a machinery factory? That doesn't sound like words.

Therefore, the minister felt that a machine factory should also be built around Luozhou, and within this year, the two machine factories should reach a daily production capacity of at least 500 units. The production capacity of trucks is not enough, the army cannot be equipped, and the combat effectiveness cannot be improved, even if the road is built, so much is needed, right? ”

Well, to reach the production capacity of 500 units per day, 90,000 units is enough for half a year, plus it also needs to be used to build roads in various places, and the army will definitely not be able to eat alone.

But no matter how you calculate it, as long as the combined production capacity of the two factories can reach 500 units, at most a year and a half or two years, the army will be able to get at least 90,000 trucks.

Cheng Zhijie's calculations, of course Li Yuanji knows, expanding production capacity is certain, even if he doesn't say it, he has already started to do it.

Under the planned economy, all kinds of infrastructure facilities are the cheapest and the quality is guaranteed, and Li Yuanji is not a fool, how could he give up such a good opportunity?

Even if nothing else can be done, at least an official road connecting all the state capitals of the entire Tang Dynasty must be built.

But in order to do this, tens of thousands of trucks are far from enough, because there is more than one construction site, there are not enough trucks, the transportation cannot keep up, and the construction site can only stop work and other materials, which will waste time and manpower.

"I'll think about these things." Li Yuanji replied a little speechlessly.

"Your Majesty, the other troops can wait, but the troops on the front line can't wait, now logistics and transportation have become the main factor limiting their offensive capabilities, as long as there are two thousand, no, as long as there are a thousand trucks, the front line can liberate at least three divisions, and at the same time, the combat effectiveness of other troops can also be increased by at least a quarter." Cheng Zhijie began to talk about the front line.

The loading of trucks made him think of a solution to the problems at the front.

Although he is not in charge of the specific operations on the front line, as the secretary of the military department, when there is a problem, he is still responsible for solving and coordinating.

Regarding the situation on the front line, Li Yuanji also knew very well that he had to read every war report.

It can be said that on the front line, there is not a single enemy who can pose any threat to the Don Army.

And the greatest threat to the Tang army was themselves.

Yes, the battle line is too long, the supply capacity cannot keep up, and the enemy's frequent sneak attacks on the transport line are not large, but it also holds back a large number of troops to protect the transport line.

As a result, there are fewer and fewer troops on the front line to fight, and as the front advances, the ability of the troops to continue the offensive becomes weaker and weaker.

It's not that it's because it's skinned, but the materials really can't keep up, the consumption of ammunition, the consumption of all kinds of materials, just relying on horse-drawn carriages to transport, can it work?

How much can a carriage transport?

Cheng Zhijie has made a detailed comparison, the transportation capacity of a truck is ten times that of a horse-drawn carriage, which still takes into account the situation of roads and bridges, if you do not consider these, simply consider the transportation capacity, a truck is enough to withstand the capacity of twenty horse-drawn carriages.

The supply lines that used to take three days to cover can now be completed in one day, which means that as long as there are enough trucks to transport supplies, with the number of troops now committed to the Korean Peninsula, Goguryeo and Silla can be crossed.

"Your Majesty, in fact, the situation over there is already obvious, there is only one breath left on the other side, and now we have no ability to mobilize more troops to pass, we can only find ways to maximize the combat effectiveness of the existing troops. On the premise that the advantage is exhausted, it may not be a good thing for us to drag on the war for too long. Cheng Zhijie continued.

Regarding this issue, Li Yuanji also has his own considerations, of course, it is undeniable that Cheng Zhijie's statement is not wrong.

The Tang Army, which is equipped with rifles, is indeed more ferocious in combat effectiveness, but at the same time, the demand for materials is also greater than before.

In the past, as long as the troops had enough rations, it was sufficient, and the troops could keep fighting for as many days as they could.

And now, not only it is necessary to ensure rations, on the contrary, the issue of rations has become a trivial matter, and the most important thing is the issue of ammunition, which alone means that the troops have lost their combat effectiveness.

This is a more powerful sequelae, so advanced is not necessarily a good thing, if there is no sufficient supporting facilities, the choice of corresponding backwardness is not necessarily a bad thing.

"Send 1,500 trucks to the front line and concentrate on getting rid of Silla." Li Yuanji nodded secretly.

Weighing the pros and cons, building roads is important, but the war on the front line is equally important, building roads is not an overnight thing, and it is also a good thing for Datang to solve the battle on the front line as soon as possible.

The purpose of military training has basically been achieved, and if we continue to fight, we will not be able to produce any better results in military training, but on the contrary, it is possible that the troops will have the mentality of underestimating the enemy and being careless.

Although Silla has great potential and has historically unified the Korean Peninsula, Silla is still a little immature.

Compared to the big brother Goguryeo, Silla is now completely a child, and people can't be wary at all.

And in this matter, Goguryeo can be regarded as secretly cheating Silla.

Of course, this also has something to do with the strategy of the Tang Army.

The main direction of the Tang army's attack was Silla, while Goguryeo's side was mainly delayed, and Goguryeo was happy to see this, but continued to provide support to Silla in secret, hoping that they could resist stubbornly and consume the Tang army's vital strength as much as possible.

The better Silla fought, the more Tang troops died, the less pressure they faced next, and the greater the likelihood of victory.

However, they obviously did not expect that it was not the Silla people who were holding back the Tang army, but the Tang army's own materials.

"Well, after 1,500 trucks are in place, within a month, we will definitely be able to completely solve the Silla problem, and by the end of the year, it will be enough to solve the entire Korean Peninsula." Cheng Zhijie replied confidently.

He still has this confidence, don't look at the ambiguity between the Tang army and Goguryeo on the front line, but secretly the Tang army has gone deep into the enemy's territory countless times to investigate the situation, mainly focusing on the road situation, and now it has basically been explored.

In addition, this side of the land is not idle, before the start of the war, it is constantly hoarding supplies there, and when the time comes, hundreds of trucks are being dispatched, which can be attacked from both sides and multiple roads.

What if Goguryeo has a complex terrain? What the Tang Army wants is only a supply channel, and the rest cannot pose any threat to the Tang Army at all.

Moreover, when surrounded by enemies on many sides, can Goguryeo defuse the offensive of the Central Plains Dynasty many times as it did in history?

At least for now, it's hard, and the odds of success aren't great.

The combat effectiveness of the Tang Army has long been deeply rooted in the hearts of all people on the Korean Peninsula, and no one can be confident enough to believe that they can defeat the Tang Army, and in terms of morale, they have fallen into disadvantage, and the current Tang Dynasty is no longer the Tang Dynasty in history, and the current Tang Dynasty is more powerful than the Tang Dynasty in history.