Datang romantic little landlord

"Uncle Cheng, you have to help my nephew. Whether my nephew can return to Chang'an before my wife gives birth depends on Uncle Cheng's guidance."

But Cheng Yaojin raised his head and laughed loudly: "Ziyou, I always thought you knew astronomy and geography, but I didn't expect that you would also show your timidity. Is it an outing when you start the army? Is it not a dream to expect to lead an army of 15 from Jingzhou to the Western Regions within three months?"

Li Wangyou couldn't help being stunned, he didn't understand what Cheng Yaojin meant by this?

It is absolutely true that the distance from Jingzhou to Gaochang is more than 4000 miles.

Although Li Wangyou has never been in contact with the army, he is generally aware that the ancient Chinese army marched about [-] to [-] kilometers a day.

In conversion, it took more than two months to complete the journey of more than 4000 miles.He estimated three months, and he already felt that he had plenty of time, why did Cheng Yaojin say that he was dreaming?

"I also ask Uncle Cheng to enlighten me."

"Ziyou, do you know what a 15-strong army is? Let me tell you this. If the 15-strong army sets off in formation, the forward has already arrived at the destination and set up camp, and the rear has not left the camp yet. Do you understand?"

"Moreover, the speed of the army is based on the speed of the luggage team. It takes four hours a day to march, and the speed of the luggage team is at most forty or fifty miles per day."

"Besides, if it is windy and rainy, the army cannot go out, so they can only stay in the camp. After marching for many days, the army also needs to rest. Such things are quite normal. Therefore, if the 15 army wants to rush to Gaochang, Without half a year, that is simply impossible!"

Cheng Yaojin's words made Li Wangyou dizzy immediately.

As a military fan, he also knows that Cheng Yaojin did not fool him.

At that time, the 80 army of the former Qin Dynasty claimed to throw whips to cut off the flow, but the front army was completely defeated, and the rear army was still on the way.

This is the barrel principle, the marching speed of the army needs to be consistent with the slowest unit in the army.

But in Li Wangyou's mind, the logistics speed of the army should not be so slow now.

Li Wangyou asked puzzledly: "Uncle Cheng, since I made a four-wheeled carriage, the transportation speed of logistics and luggage is not slow, let alone two hundred miles a day, it is not a problem to march a hundred miles a day. "

Cheng Yaojin raised his head and poured another large glass of beer, and gave him a squinting look: "Bullshit, is it possible that your four-wheeled carriage can enter the desert?"

Hearing this, Li Wangyou stood there dumbfounded as if struck by lightning...

He had indeed forgotten that after marching through Dunhuang County, the army would enter the vast desert.

The Tengger Desert, the fourth largest desert in China, is more than 160 kilometers wide, and those four-wheeled carriages cannot enter anyway.

Now Datang has established a trade center in Dunhuang County, and a large number of goods are transported to Dunhuang County by four-wheeled carriages for trading, which greatly shortens the transportation distance of caravans on the Silk Road.

However, from Dunhuang County to the Western Regions, the caravan had to change camel teams before moving on.

The same is true for the army. To supply the luggage of 15 troops, a large number of camel teams must be used to meet the needs of the army.

In this way, Tang Jun's marching speed will inevitably not be fast.

And to pass through the desert, in addition to food and supplies, the Tang army must also carry enough water, under the guidance of the guide, to pass through the desert...

After Li Wangyou wanted to understand this point, he couldn't help but sat down slumped.

Paralyzed, if this is the case, how could he rush back to Chang'an City in half a year?

993 stumbling block

Cheng Yaojin gulped down a glass of cold beer happily, and burped loudly again, very satisfied.

He looked at the troubled Li Wangyou again, and gave another heavy blow.

"Ziyou, I'm afraid you haven't calculated how much food, grass, and supplies are needed to supply an army of 15, right? Let me tell you this, let's not mention ordnance, armor, tents, flags and drums. Just food and grass is an astronomical task." number."

"When my military soldiers of the Tang Dynasty went out to fight, they carried five days of dry food with them, and the rest was supplied by luggage. Each soldier ate two liters of rice a day, and a 15-strong army needed three thousand shi of grain for this alone. .According to the weight of [-] stones per cart, it would take a hundred carts to supply the army with food for a day."

"It's also fortunate that my Tang Dynasty has no shortage of mules and horses, and I worry about you getting this four-wheeled carriage. Otherwise, even if Your Majesty wants to conquer Gaochang Kingdom, it will be difficult to do so. Just maintaining the army's supplies and food is a big problem. "

"But even so, if the army wants to pass through the desert, it still needs to be transported by camels, mules and horses. The camel bears three stones, and the horse and mule carry five buckets of stone. Ziyou, do the math, how many animals are needed to supply the army?"

"And with so many animals, how much horse fodder and millet are needed? Have you ever calculated? And how much is the loss on the way to transport these grains, grasses and luggage?"

What Cheng Yaojin said made Li Wangyou even more stunned and speechless.

This is really not ignorance, it is a shock.

It is no wonder that it was not until the 13th year of Zhenguan that Li Er ordered Hou Junji to attack the Western Regions. In fact, it was because of logistical difficulties.

Li Wangyou didn't even know that in the 13th year of Zhenguan, the 15 troops who conquered the Western Regions actually had only [-] to [-] soldiers, and the others were all heavy soldiers in charge of logistics.

But now it's a little different.

At least because after Li Wangyou made the horseshoe, the elimination rate of Datang's war horses and draft horses dropped sharply.

Therefore, almost everyone in the 15 Tang army rode horses.

Even infantry rely on horses to march, and only dismount to fight when they are facing each other on the battlefield.

The marching speed of the army can thus be improved a lot, but it will always be dragged down by the baggage due to the restraint and barrel theory.

The soldiers and horses are not moved, and the food and grass go first. This is a necessary condition for the army to march and fight.

Li Wangyou was very frustrated by Cheng Yaojin's words, he couldn't help but grabbed his wine glass and took a big gulp of wine.

Paralyzed, he thought that Li Er's conscience found out,

But he didn't expect that this unscrupulous Uncle Cong actually dug such a big hole for him, and he jumped into it foolishly.

He, Li Wangyou, doesn't understand military affairs, how can Li Er not understand?

Li Er knew how long it would take for an army of 15 to march to Gaochang.

Even so, Li Er actually pretended to ask Yu Shinan to tell him that after Gaochang was wiped out, he could return to Chang'an to visit... Bah, this old man is very bad!

The more Li Wangyou thought about it, the angrier he became, he didn't need Cheng Yaojin to persuade him to drink, he just drank one cup after another, and started drinking.

Cheng Yaojin didn't go to comfort Li Wangyou either, for the old rascal, it's already very kind if he doesn't add insult to injury.

"Ziyou, you don't have to be impatient. It's not a big deal for a woman to have children. Look at me, my mother-in-law and aunt have given birth to so many children for me, and I have never been as nervous as you." Cheng Yaojin While drinking heavily, he made fun of Li Wangyou.

Li Wangyou silently rolled his eyes, really too lazy to talk nonsense with the old hooligan.

Cheng Yaojin pointed to a plate of dishes just brought by the maid and said: "Come on, Ziyou, you can try the bacon made by the cook in my house. It's perfect for wine. It's not that I'm bragging. In the city of Chang'an, The bacon is worse than that made in Lao Tzu's house, that's not it. Even the food bureau in His Majesty's palace is not as good as it is."

Cheng Yaojin's words made Li Wangyou's eyes shine.

bacon?

Immediately, he slapped his forehead violently.

He is also confused recently, why did he forget about the general rations?