Li Shimin carefully read the thunder and explosion scene described by Zhang Wen again before putting down the letter in his hand:

"If there really is such a weapon, then its importance is definitely greater than that of the Eight Bull Crossbow, Zhong Qing, I know you want to retire, but I still leave this matter to you!"

Zhang Zhongqing nodded: "The minister is also here for this purpose this time, and the minister asks His Majesty to set up the Thunder Division, and the minister will be the commander to manage the thunder." ”

"I know that when I encounter difficulties, you will always worry about me! How's that, does the Hundred Riders still have any people to spare? If not, I'll give you a few more. ”

"There are a few more, and there is nothing to do, so the minister is ready."

"Don't prepare, the thunderstorm has to be decided by the landlord of the world, and when he comes back, you will go to him and obey his orders! By the way, where is he now? ”

Zhang Zhongqing smiled bitterly: "The first time the men of the Hundred Cavalry Division targeted him and the King of Shu, he found that the members of the Hundred Cavalry Division who had many routes from the border to Chang'an had never seen any trace of them again......"

It's a joke that a bunch of idiots from the Hundred Horsemen want to track down a killer!

Leng Feng was planning to do experiments on the way back to Chang'an, how could he be stared at!

Every time he went to a county, Leng Feng would buy something, and when he arrived in a no-man's land, Leng Feng began to make what Zhang Wen called "thunder".

In a valley, Leng Feng ignited his homemade black powder bullet for the first time.

Laugh at! The fuse was ignited, and Leng Feng immediately pressed Li Ke behind the tree.

Rumble!

You can see the splashing earth and rocks from a distance, Li Ke looks at his master like a god, it's amazing! It's just a mixture of a few powders, then mixed into granules with egg whites, and finally put into an iron wine jug, which has such power when lit!

In comparison, that dust explosion is a toy!

It wasn't until the smoke cleared that Leng Feng checked the power.

When the flask was blown up, it formed a pit of one meter in diameter and 20 centimeters deep, and the fragments of the flask and some gravel burrowed deep into the trunks of the surrounding trees.

No, the power is still almost, it may be the reason why the nitrate is not pure, otherwise the power of black powder, which is already in the range of militarization, would not be so low.

Leng Feng pointed to the stones embedded in the tree and said to Li Ke: "There are two ways to cause damage to gunpowder, one is shock wave, and the other is fragmentation. As a competent commander-in-chief, learning to use it is a top priority. Then I'll test you now, what else do you say gunpowder can be used? ”

Li Ke didn't think about it and said: "Mounted on the eight-bull crossbow, mounted on the trebuchet, the siege is extremely convenient, and it doesn't matter if the arrow is not accurate." If you dig a mountain and dig a road, it is also much faster to use it than manually! ”

Leng Feng was very satisfied with Li Ke's answer, so he patted him on the shoulder: "Let's go!" Let's go back to Chang'an. Your emperor daddy is probably in a hurry. ”

……

Li Chengqian deliberately took Yao Silian to watch the construction process of the academy.

The academy is located on the edge of Weishui, with beautiful mountains and rivers, birds and flowers, which are not enough to describe the beautiful environment here.

Originally, Weishui was not far from the border with the Eastern Turks, and it was easily affected by war, so no one settled here. (The Alliance of the Bridge is Mingjian!) ）

However, after this campaign, the southern part of the Eastern Turkic territory completely became the territory of the Tang Dynasty, so many princes and nobles planned to build a courtyard by the Wei River.

Leng Feng threw a million guan to Li Chengqian before leaving the customs, and countless craftsmen were attracted here by the high wages of the world's buildings these days, and the land had been leveled, just waiting for the weather to be warmer and lay the foundation.

Yao Silian is old after all, and after walking with Li Chengqian for a while, his legs and feet are sore, so he can only sit down and rest.

"Alas! Although this place is good, it is still far away from Chang'an, and the old man doesn't know if he can afford it. ”

Li Chengqian asked for the wine jug from the hand of the guard, respectfully handed it to Yao Silian, and waited for Yao Silian to drink the wine and ease his breath before saying: "Mr.'s family is poor, and he doesn't even have a donkey to travel, how dare Chengqian let you run around every day." At that time, there will be a lot of small pavilions near the water by the Wei River, all say that the benevolent person is happy mountain, the wise man is happy water, Mr. is a rare wise man in the world, and it is better to live in it. ”

Yao Silian hurriedly waved his hand: "According to what you said before, you are teaching in your Tianxia Academy, and the old man and others have a monthly salary of twenty yuan, which is already a big advantage, how can you ask for a house again!" ”

Li Chengqian said with a smile: "Of course it wasn't given to you, if you take over this house, you won't have a salary for two years." ”

"It turned out to be borrowed, so it's fine!"

After resting enough, Yao Silian continued to climb again, and suddenly he found that there were many people clearing land in a large area by the river not far away, so he asked Li Chengqian: "I think the site of the academy is big enough, why is it still flat over there?" ”

Li Chengqian explained: "Different from our academy, we are a world academy, teaching knowledge, and learning is the way of Confucius and Mencius. Over there is the Tianxia Martial Arts Academy, which teaches the art of war, and learns swords, guns and sticks. ”

Yao Silian nodded: "Having both civil and military skills is the way to strengthen the country, His Royal Highness the Prince, although I am the Prince Xian Ma, I have never taught His Royal Highness the Crown Prince the knowledge of governing the country and the country, nor have I taught how to govern." Today, we are standing in the middle of the academy martial arts, and the minister has something to warn His Royal Highness the Prince. ”

Although Yao Silian only has the title of "Prince Xian Ma", he is Li Chengqian's teacher on the surface, not to mention that he is a well-educated Confucian, and he is qualified to teach anyone.

Li Chengqian hurriedly surrendered his hand: "Gu will listen to it." ”

Yao Silian pointed to the north and said: "The Turkic troubles are known even to the common people. Some pedantic old ministers keep saying that they need to convince people with virtue and convince the world with reason, and finally reach the situation where all countries come to the court, and then they can put swords and guns into the warehouse, and the horses will be released in Nanshan, and the world will be peaceful. Your Royal Highness the Prince, what do you think? ”

Li Chengqian snorted and said, "Fart!" ”

Yao Silian laughed: "That's right, it's fart." This time, His Majesty sent troops to conquer the Eastern Turks, and many people said that His Majesty was greedy for merit. I don't see it that way! The ancients said: Born in sorrow, die in peace. Don't deceive me! To defend the enemy's borders, we need force, and to govern the people, we need literary talents. If the armed forces are weakened, the foreign enemy will invade, and the civil servants will disrupt the law, and the internal people will be exposed. Does the prince know what I mean? ”

Li Chengqian said without hesitation: "What Mr. means is that a country needs both force and civil rule, and both are indispensable. ”

Yao Silian sighed and said: "Since ancient times, civil and military conflicts have been inevitable, if Your Highness succeeds to the unification, you must pay attention to the balance between the two." ”

Li Chengqian respectfully saluted the ground: "Thank you Mr. for your teaching!" ”