Li Shimin did not take out a single penny from the treasury to get the latest technology for smelting steel, but in the dark, there was always a feeling of being deceived, and that feeling was very strange, and it was impossible to say what was wrong.

"The new army trained according to your method is very good, I went to see them just now, the spirit is very good, the battlefield effect is also very good, about that competition, I already have the answer in my heart." Li Shimin, like Li Yuanji, watched the craftsmen being nervously busy, turned his head to look at Li Yuanji, and continued to ask: "I am very curious, what will you do if you encounter a tough battle?" ”

After all, the number of new troops trained by Li Yuanji was too small, and the main role of this operation was scouts, and it was very effective to wipe out the enemy stragglers in front of the army in one fell swoop.

During the entire march, not even any enemy stragglers were able to get close to the main army, and the new army not only achieved the record of destroying thousands of enemies, but also suffered no casualties of its own.

Li Shimin has also received a battle report on the tactics he has adopted, that is, he relies on the recurve bow in his hand, uses the ultra-long range, hides outside the enemy's range to attack, and always puts himself in a safe area, unless it is his own mistake, it is impossible to have casualties.

Horseshoes and saddles are also a good thing, insignificant little things, but they allow the 1,000 new troops, whether they are fast or stamina, to appear on any battlefield at any time, almost regardless of the terrain.

And there is no problem with the siege tactics adopted by Cheng Zhijie, as for the casualties of 2,000 and the city wall was not captured, he could only blame the weather for being too cold, and the continuous march greatly affected the soldiers' combat enthusiasm and physical adaptability.

"I've already used the method, as for the hard attack, there is no solution at the moment!" Li Yuanji replied lightly.

"Is it really incomprehensible?" Li Shimin was slightly stunned, and there was some surprise in his heart.

Li Yuanji's plan is to lure the snake out of the hole, and blame Li Yi for not being tempted, otherwise, he can be invincible no matter what.

The surprise is because Li Yuanji can't find a way, so he can only use this method to solve it, and the reason is that the imperial court may encounter this situation in the future, does it have to lead the snake out of the hole every time? What if the enemy doesn't come out?

"There's no solution right now, but there's a solution soon!" Running to take a look at the freshly baked molten steel, Li Yuanji was thinking about making steel bars in his heart, and said absentmindedly.

"How?" Li Shimin was stunned, happy and sad.

"After the eldest grandson Wuji opens his mouth, there will be a way." Li Yuanji bluntly threw the problem on the eldest grandson Wuji.

It was said that half a month had already arrived, but Li Yuanji was out on the expedition, and Li Shimin also heard that the eldest grandson Wuji was not suffering in the Qi Palace, so he was not in a hurry to send someone to take him out.

But how to deal with the eldest grandson Wuji is Li Shimin's biggest headache, looking at the queen's absent-minded and heartbroken appearance every day, Li Shimin even had the idea of not killing the eldest grandson Wuji.

On this topic, Li Shimin was reluctant to talk to Li Yuanji, but he really didn't know how to talk about it.

"Horseshoe and saddle, how much money are you going to sell to the imperial court?" Li Shimin then opened the topic and focused on the saddle and horseshoe.

These two small objects played a huge role in this campaign, and the difference was not noticeable in the short distance, but the continuous operation showed the benefits of these two things.

War horses can run on various terrains for a long time, cavalry will not be so tired, do not need to spend too much energy to control the balance of the body, one is a new invention, the other is an existing improvement, the investment is not large, but the effect is excellent, how can Li Shimin easily miss it?

"It's not too much to give a few thousand, it's not too little to give a few dozens, it's just a small object." Li Yuanji stretched his waist beautifully, he didn't expect to sell these two things to the imperial court, otherwise he would not have directly asked the general to do it, and stretched out his finger and pointed to the pot of molten steel that had just come out of the oven: "Find a way to make that pot of molten steel into steel bars the thickness of a little finger, and there should be some patterns on it." ”

"I'll give you five hundred!" Li Shimin thought about it, he didn't want to take advantage of Li Yuanji, and he didn't lose money if he went to buy the skill of horseshoe and saddle for five hundred yuan.

"Feel free!" Li Yuanji nodded casually, and his mind was on the pot of freshly baked molten steel.

"Good steel, not used to make weapons, what do you do with that steel bar?" Seeing that Li Yuanji had no intention of talking, Li Shimin took the initiative to ask, not that he had nothing to say, but that he was reluctant to waste such a good steel.

You must know that Datang gets such a pot of molten steel every day, and the manpower and materials consumed are too much, and a good piece of steel can be said to be priceless in the market, and it is difficult to find a thousand gold.

Although I don't know what the steel bar is used for, it is clear that it is not used to build weapons.

"To build a house, you can use this for a small house, but you must use it for a big house, otherwise the main body is not reliable enough." Li Yuanji said with a burst of contempt in his heart.

"Make ...... Build a house? "I'm a fairy banban, and you haven't made enough trouble? Such a good material, even if you don't use it to build weapons, you actually use it to build a house?

"That's right, the recruitment of the Academy of Sciences is not going well, I plan to build a school by myself to train ...... personally" Li Yuanji said his plan to build a school from beginning to end, and even explained some details very clearly, and also vaguely proposed that he wanted Ma Zhou to be in charge of the school, so don't think about it in the short term.

Ma Zhou on the side was even more frightened when he heard it, and secretly prayed in his heart that Li Shimin would never be angry, but Li Shimin finally got angry.

However, Li Shimin's anger was not directed at Ma Zhou, but at Li Yuanji's decision to build a house with such good steel, which was simply a violent thing.

"What's there to be angry about? This thing can produce several furnaces a day, one furnace weighs a thousand pounds, and it is enough to build a school with thirty or fifty furnaces, by the way, check the stability, and sell the steel trained in the future to you to make weapons. Li Yuanji shrugged his shoulders and explained indifferently.

"Hmph, anything good is a ruined life when it comes to you!" Li Shimin couldn't argue, and with a wave of his hand, he turned around and left.

Li Shimin felt that if he continued to entangle with Li Yuanji, he was afraid that he would be angry to death.

There was a moment when Li Shimin even wanted to take back the Academy of Sciences directly and let Li Yuanji get out.

But in the end, this idea was dispelled, through a variety of understanding, the current construction of the Academy of Sciences is still completely complete, many things are blank, this thing is given to himself, and he doesn't know what to do, and Li Yuanji just has a complete set of plans, and even has to cultivate talents.

Li Shimin decided to let Li Yuanji do it first, and then take the Academy of Sciences under the ownership of the imperial court after everything was formed, as for Li Yuanji, Li Shimin had a bold idea in his heart, but he had to plan it well.

After Li Shimin left, Li Yuanji began to devote himself to rigorous discussions, gathering with the sweaty craftsmen to discuss how to make the steel into the shape Li Yuanji wanted.

The craftsmen were speechless, and there were many brain-opening methods one after another, and finally a craftsman named Wang Wu proposed a seemingly feasible method.

This is achieved by pouring the method.

The principle is very simple, that is, to make a hollow pipe, and then engrave the desired pattern at the bottom, fix it at a high place, pour the molten steel directly into it, and let it fall down through the pipe itself.

For such a strategic suggestion, Li Yuanji naturally clapped his hands happily and directly handed over this task to Wang Wu to be responsible.

After finishing the affairs of the Iron Smelting Division, Li Yuanji took Ma Zhou to wander around boringly in the Academy of Sciences of Nuo University, and the Academy of Sciences of Nuo University, because of the lack of personnel, was not even one-fifth of the places that were really used.

The two wandered aimlessly, chatting about the future and vision, and the atmosphere was very harmonious.

Unconsciously, the two had returned to the gate of the palace, only to see a familiar figure happen to appear, but after seeing themselves, they suddenly dodged.

"Get out of here for this king!" Li Yuanji was curious, but his mouth was unforgiving.

Song Zhong saw that he had never taken the initiative to dodge, what happened today? Did the sun come out in the west?

After being discovered, Song Zhong walked out from behind the tree with his head lowered in embarrassment, and said in a low voice: "Your Highness......"

"Look up!" Song Zhong's abnormality made Li Yuanji feel very strange, and there was some dust on his body, as if his clothes were torn?

Song Zhong, who was forced to the edge of the cliff, was helpless, so he could only raise his head and show his whole in front of Li Yuanji.

"Say! What's going on? Seeing Song Zhong's scene, a wave of anger arose, instantly occupying the entire body and brain, Li Yuanji asked with a grim face.

"I didn't ...... It's okay, the slave accidentally fell on this matter, and I felt a little embarrassed, and I was embarrassed to let people see it. Song Zhong said with a somewhat evasive look in his eyes, wanting to fool the past as soon as possible.

"Fart! Do you have the ability to drop another one for this king to see? Can fall like this, this king and your surname! Li Yuanji, who was angry, couldn't help but scold, knowing that this matter may not be so simple, Song Zhong may be out of kindness, and he can't bear to see himself causing trouble, but his own people have become like this, it is Li Shimin, and Lao Tzu has to go up to ask for an explanation.

Seeing that Li Yuanji seemed to be really angry, Song Zhong also knew that he couldn't hide this matter, so he could only secretly pray in his heart that King Qi could calm down and not lose a big deal because of a small thing.

Hesitating, slurking, Song Zhong lowered his head and whispered: "It's the Wang family......"