Datang: The prince of salted fish was overheard by Li Er

[I just put "The Complete Illustrated Handbook of Cold Weapons" on the desk, it would be bad if Li Er saw it. 】

【Hey, if I tell him not to look through my things now, wouldn't there be 300 taels of silver here. 】

[It seems that I can only hope that Li Er doesn't have the habit of flipping through things. 】

In fact, if it weren't for Li You's voice, maybe Li Shimin wouldn't be interested in what he put on the table.

But the situation is different now.

After Li Shimin came to the study, he went straight to the desk, and then picked up the "Complete Illustrated Handbook of Cold Weapons".

Li Shimin spent half his life as a soldier in the South and North Wars, and he also has a lot of experience in weapons.

After only turning a few pages, Li Shimin was shocked by the weapons in the book.

The sophistication of the weapons in the book is far better than this era.

Suddenly, Li Shimin realized.

This must have been given to You'er by the immortal master named System.

Thinking of this, Li Shimin gave up the idea of ​​directly taking the book.

Although the content of the book is really shocking, Li Shimin still held back this tempting thought when he thought that the immortal might anger Youer because of this incident.

Since the book cannot be taken away, Li Shimin tried his best to remember the contents of the book.

He took a fancy to one of the knives.

The name of this knife is Modao, and it is a long-handled big knife. This knife is double-edged.

It looks a bit similar to the horse-cutting sword of the Han Dynasty, but it is thicker and more convenient for cutting horses.

Description in the book: The Mo Dao is extremely powerful, with a sharp edge, bleeding and floating pestle, one blade can cut people and horses apart, and those who hear it are terrified.

It is a sharp weapon for infantry against cavalry.

Li Shimin will take a fancy to this knife because he thought of his old opponent Turkic.

The Turks are a nomadic people, that is, people who ride on horseback. People ranging from eighty-year-old men to children as young as three years old can ride horses.

Datang, on the other hand, was a farming civilization through and through.

Although there are elite cavalry in the Tang army, such as Xiliang Tieshou and Yanyun Eighteen Cavalry, which are not inferior to the Turks, the Tang army has a larger number, but it is still infantry.

When infantry faced cavalry, they naturally had some disadvantages.

Not to mention the mobility of the cavalry coming and going like the wind, it is a frontal battle formation. Facing the impact of the horses, the deafening sound of horseshoes alone is enough to cause a great deterrent to the infantry.

Therefore, if you want to defeat cavalry with infantry, you must have special weapons.

The Horse-Chopping Sword of the Han Dynasty belongs to one of them.

But as the Turks gradually mastered the method of cutting the horse sword, the role it can play in the war has become smaller and smaller.

And the appearance of this Mo knife made Li Shimin see the method of using infantry to fight against cavalry.

Especially what is said in the book, when the Mo Dao comes out, the sky and the earth change color, and the cavalry cry and howl, and they have the title of cavalry nemesis.

This made Li Shimin yearn for Mo Dao even more.

In addition to introducing Mo Dao, the book also introduces Mo Dao's tactics, the mainstay, advancing like a wall.

Immediately, in Li Shimin's eyes, a group of warriors holding mo knives appeared in the sea of ​​corpses, shaking the enemy cavalry like a steel Great Wall.

Wherever the knife wall went, the enemy soldiers and horses were all smashed.

When Li Shimin recovered from the phantom in front of him, he already understood that as long as he can create such a Modao army, why worry about the Turkic being immortal.

After carefully memorizing the forging method of this knife, Li Shimin also forgot why he came to Li You in the first place.

When Li You pushed the door and entered, he hurriedly closed the book, and then said to Li You: "Your, it's getting late."

"For the visit, I will come again next time, and I will go back to the palace first."

"My son, Li You, send my father off respectfully!"

Although Li You was stunned, he was still willing to send Li Shimin away.

[What's the situation, why did you leave? 】

[The heart of an emperor is unpredictable. 】

【However, it’s fine to leave. I still need to familiarize myself with the method of coal washing and coal preparation that I just learned. I will teach Mu Bin the method of identifying high-quality coal mines, and ask Jin Yiwei to go to my fief to see if there are any coal mines. 】

[Such a good technology cannot be wasted. 】

This time Li Shimin felt that Li You was making a fuss out of a molehill.

People in this era generally use their own firewood, charcoal is used if conditions are good, and coal is generally not used.

The smoke from coal is too big, if you use it indoors, you may not want to live.

Coal is only used by blacksmiths when melting metals with high melting points.

So in Li Shimin's mind, Li You sent Jin Yiwei to find the coal mine, which is a waste of manpower.

However, Li Shimin didn't have the heart to chatter with Li You anymore, he kept recalling the forging process of Mo Dao, lest he missed something.

After leaving the Shence Mansion, Li Shimin hurriedly said to Li Junxian: "Junxian, go to Weiwei Temple and summon Tang Jian to the palace for me, and the casting master of Weiwei Temple will also be together."

Weiwei Temple, one of the nine temples, is in charge of the decree of guarding weapons and armor.

All kinds of weapons in the palace and the elite soldiers and armors of Gyeonggi all come from Weiwei Temple.

Tang Jian, the current Minister of Weiwei Temple, is also a member of the Great Tang Dynasty.

A few months ago, Tang Jian had just returned from a mission to Turks.

After returning, Li Shimin asked Tang Jian: "Do you think Jieli can be captured?"

Tang Jian replied confidently: "Depending on the power of the country, the matter is expected to succeed."

Li Shimin was overjoyed, so he left him in the capital to supervise the manufacture of weapons at the Weiwei Temple, just to attack the Turks on a large scale.

Before Tang Jian came over, Li Shimin immediately drew the process diagram and production flow chart of Modao while he remembered clearly.

To say that Li Shimin's painting is not bad, it basically restores the contents of the book completely.

Even many details are accurately depicted.

If Li You sees this Mo Dao craft drawing, he will definitely feel that his book copied Li Shimin's ideas.

Soon, Tang Jian entered the imperial study.

Then there was a burst of exclamation.

After that day, it rained continuously for ten days in Chang'an, making it impossible for Li You to go out for a walk.

However, Li You was not idle either. In the past few days, he thoroughly studied the cement workshops together with Dou Dan and Haig in the Shence Mansion, and finally determined the construction plans of the cement workshops in various places.

During this process, Li You was greatly moved by Dou Dan's enthusiasm.

He made an appointment with Dou Dan that after the construction of the cement workshop was completed, papermaking and printing workshops in various places would also be established together.

Moreover, the profits of these workshops are all [-]%.

Don't look at it as just [-]%, but it's a lot of money when you calculate it carefully.

And this [-]% is extra, all other Dou family's investment will be converted into shares and calculated in the workshop's share.

With these few cooperations, the Dou family will leap ahead of most of the current aristocratic families.

Ten days later, the sky finally cleared.

On this day, Changsun Wuji had just arrived at Shangshu Province's classroom, and he heard reports from all over the pass.

"What's going on? What's wrong with this!"

Changsun Wuji was startled, and asked quickly.

Guannei is the foundation of the Tang Dynasty. Now the relationship between the royal family and the aristocratic family is a bit tense, and Changsun Wuji doesn't want to have trouble at this time.

However, Du Ruhui smiled, didn't speak, and handed a memorial to Zhangsun Wuji.