Kong Yingda hurriedly arrived at the prince's dormitory and saw His Royal Highness the prince, but Li Chengqian was lazy, as if he hadn't slept all night, as if he had been hollowed out by wine.

Kong Yingda immediately saw the books scattered under the bed and looked at it...... Taken aback.

Isn't this the textbook that came from Erpigou?

Oh, my God......

I, the prince of the Tang Dynasty, actually ......

Be calm, be calm, Your Majesty also appreciates this textbook, and if you take this opportunity to attack this book at this time, not only the prince will not like it, but Your Majesty will also be furious.

So Kong Yingda said with a smile: "Your Highness, where did this book come from?" ”

"Chen Zhengtai sent the lonely, what, do you want to see it? To show you, you don't understand either. ”

Kong Yingda: "......"

Want a certain Kong Yingda, after the Confucian sage, the world's well-known Confucian, still need to read this broken book?

Kong Yingda smiled and said, "Your Highness should take care of your body now. ”

"But Lone already feels that his body is almost recovered." Li Chengqian said: "Why don't you take a look at it?" ”

Kong Yingda's face turned blue with fright, and he hurriedly said: "Your Highness, no, by all means, the minister will leave first." ”

Li Chengqian was immediately happy, he knew what Master Kong meant by coming here, and he was just scaring him.

It must be known that in this Tang Dynasty, the most embarrassing thing is the prince, but the most miserable is the prince's teacher.

After all...... This guy, you can't beat or scold, if he is good at learning, it means that he is smart and clever, has a pure blood, and is a good species.

But if he is stubborn, then you, the teacher, have no way to teach.

When Li Chengqian saw Kong Yingda leaving, he ordered the eunuch to pick up the books that had been scattered on the ground when he was asleep last night, and then began to read them again.

Gradually, he began to get a little trick to this book...... You have to look at it from the beginning, understand the content in the front, and then you can understand it, and many of the contents, once you start to really think about it, you can't help but realize that the knowledge here is really interesting.

Of course...... Li Chengqian felt that this might be a fallacy and heresy, after all......

How is the earth round? It's not round, and ...... All around is full of ...... It's a kind of qi, what is this qi? As for gravity, it is even more unreliable, can it be that it can fly without gravity?

After half a month, Li Chengqian felt that his leg injury had healed, so he couldn't help but sit on the chariot and go to Erpigou.

When I arrived at Erpigou, I found that it was very lively, and the most lively place was actually a shed, although this shed was simple, there was a long queue outside, and many people who looked decent were lined up here......

Li Chengqian couldn't help but feel strange and ordered the eunuch to ask.

After a while, the eunuch came over and replied: "If you go back to Your Highness, these people ...... They all tried their best to settle down. ”

"Settle down?" Li Chengqian was stunned for a moment, and said in surprise: "What does it mean to settle down?" ”

"As long as you are not a slave and a tenant farmer, you can come to Erpigou to settle down, but I heard that the settlement standards of Erpigou are very strict, but many people still want to try, not to mention ordinary people, that is, some small officials and businessmen have come!"

Li Chengqian said in surprise: "This Erpigou is so desolate, they are willing to come?" ”

"Your Highness doesn't know anything, I heard that ...... Erpigou is here...... can earn money, outside, ordinary people can't even find a job, but here, as long as a strong man is willing to work, many errands can be picked at will, not only can he have three meals without worry, but also earn one or two hundred dollars a month. If you have some skills, here, even a few dollars can be earned casually. Therefore, many people want to settle here, and there are not only small officials, but also businessmen and craftsmen who come here......"

At this moment, Li Chengqian interrupted the eunuch's words: "Wait, what are these little officials and businessmen doing here, they can afford this little benefit?" ”

The eunuch glanced at Li Chengqian and said, "Your Highness... In fact...... In fact, if the slave has descendants, he also wants to settle down. After all...... These people are not a big family, it seems that they can make some money in business today, or they can find a dispatch in the government by virtue of luck, but the slave heard them say, this person is alive, and he is not one of those iron-clad families, there are always ups and downs, and there are some small riches today, who knows what the situation will be tomorrow? If you live well in this life, what will your children and grandchildren know what it will be like? Come here...... It's just for his own future, for his children and grandchildren, to find an iron rice bowl, if he really suffers from his own sins in the future, or his descendants are not successful, Erpigou here will not let himself starve. ”

Li Chengqian probably understood that in this world, not everyone can enjoy eternal wealth like the five surnames and seven sects, or like the Wei family and the Du family in Chang'an.

The more petty officials and businessmen there are, the easier it is to feel anxious, after all...... Although they have a little wealth, there are too many unpredictable things in the world, and once they fall from their own class and become commoners, then they will never recover.

Erpigou here, ordinary people have books to distribute, so that they can learn on their own and no longer satisfied, as long as they have hands and feet, there are also more artificial needs to recruit, which is a layer of protection for a certain class.

Li Chengqian said: "In this way, isn't Erpigou going to be overcrowded now?" ”

The eunuch shook his head: "This is not, there are very few people who can settle down, it is said that the conditions are very harsh, many people just come to try their luck, saying that it is a year, but a thousand households, but the slave also heard that because of this small number of posts, it is more popular." ”

"It's a strange thing." Li Chengqian shook his head: "I am in a hurry to be neighbors with Senior Brother Lone, it seems that Senior Brother Gu is still quite likeable, you also go to line up for Lone, and Lone also settles down." ”

The eunuch was taken aback: "The slave doesn't dare." ”

Li Chengqian didn't force it, let people inform Chen Zhengtai, and after a while, Chen Zhengtai came in a hurry!

Chen Zhengtai's complexion became whiter, and the weather was getting colder, so he was dressed quite bloated, and after greeting Li Chengqian, Chen Zhengtai said, "Why is Your Highness here?" ”

"I have a question for you." Li Chengqian got out of the car, holding a cane, he walked out, it was still a little inconvenient, but fortunately, the bones had almost grown!

He continued energetically, "Your fireworks...... You said in your book that if you use some kind of flammable substance, seal it and ignite it, and you will produce a lot of gas and heat. And the gunpowder, which was originally very small, expanded instantaneously in a narrow space, resulting in an explosion, isn't it? ”

Chen Zhengtai was surprised that the prince had really read the book, and ...... The prince actually read the book.

When he saw Li Chengqian's serious look, he said, "Exactly." ”

"But I don't believe it, for example, we found the fire oil, right, this fire oil burns in a confined space, can it also explode?"

"This ...... It depends. ”

"Have you tried then?"

"Ahem...... Don't dare to try. ”

Li Chengqian: "......"

Then he glanced at Chen Zhengtai.

"If you don't try, you won't believe what you say in your book."

Chen Zhengtai said with a smile: "In fact, although the prince knows this principle, but this flammable substance, I know that as long as these few flavors are found, the storage can be successful." ”

Li Chengqian still looked unconvinced.

Chen Zhengtai was very pleased that Li Chengqian was so studious, and a young man should have the spirit of being as studious as himself.

So they were busy collecting it, and then, in the evening, a 'firecracker' was ready.

Let people prepare the lead, Chen Zhengtai and Li Chengqian, who was on a cane, stood in the distance, at this time the sky was already a little dark, and as the lead was ignited, after a while, suddenly ...... Suddenly there was a sound under the night sky.

Syllable......

Li Chengqian was not mentally prepared, shivered, and his body almost fell, but fortunately Chen Zhengtai supported him.

The sound of the explosion was almost a diminished version of a two-kick.

In Chen Zhengtai's view, it is not enough.

But Li Chengqian was ecstatic and exclaimed: "Senior brother, have you seen it, have you seen it?" The light of the square, the light of the square...... Yikes...... It's really scared to death. ”

As he spoke, he walked frantically towards the direction of the explosion with his cane, the original container had been blown to pieces, but the saltpeter inside had long been gone!

Li Chengqian looked down on the spot, and suddenly said, "Senior brother, you come." ”

Then he saw that on the ground, there was a mouse, as if it had been injured, and the flesh and blood in the lower abdomen were blurred, and it struggled desperately, letting out a thin wail.

"And hurt rats?" Li Chengqian thought for a moment: "In this way, wouldn't it still hurt people?" ”

"In theory, so." Chen Zhengtai immediately smiled bitterly: "It's just ...... There is a difficulty, and that is ...... With the power of this explosion, if you want to hurt people, you must increase the amount of gunpowder, and once the amount of gunpowder is increased, this thing is only afraid that it will have to be dozens of catties to exert its effect. ”

This is just black powder, Chen Zhengtai is not optimistic about the power of this black powder, although in Li Chengqian's eyes, it is simply an artifact.

Li Chengqian looked at Chen Zhengtai in surprise and said, "Dozens of catties...... How powerful can it be? Can it really hurt? ”

Chen Zhengtai thought for a while: "Your Highness, the crux of the problem is here, such a bulky thing, it is extremely difficult to hurt people, after all, people are not stupid, they will not rush towards this gunpowder, rather than spending a lot of time using gunpowder, it is better to throw stones." Thus...... I thought it was ...... This thing can only be used as fireworks for the time being. But ......"

Chen Zhengtai remembered something, it is only the initial stage of gunpowder, and the practicability is indeed not high, unless the technology of this gunpowder continues to improve.

But it's not necessarily completely useless: "Unless...... There could be something that carried the gunpowder...... The best way to do this is to airdrop. ”

"Airdrop ......" Li Chengqian was stunned: "You mean, people are in the sky?" Isn't that in your book? There are gases in the world that are lighter than air, and as long as this principle is applied, people and things can be brought to the sky, yes or no? ”

"Uh......" Chen Zhengtai really understood at this time, why the Li family can win the world, it is really a good plant, if it is in the pig industry, whether it is his own teacher or this Li Chengqian, he can definitely go to breed pigs!

Chen Zhengtai said: "Theoretically, so. ”

"So why not give it a try?"

"We'll see when the time comes." Chen Zhengtai is busy with a lot of things now, first of all, he has to make money, but he doesn't take this matter to heart.

Li Chengqian glared at him: "What is this, you taught the palace to read the book, and the palace reads it day and night, but the senior brother is lazy?" There is no heavenly reason, I will be angry, I will eat all the chickens and pigs of your Erpigou. ”

Chen Zhengtai: "......"

Li Chengqian decided to live in this Erpigou.

He has a stubborn side in his temperament, Erpigou here, and the best building now is Erpigou University Hall.

Immediately afterwards, he saw an old acquaintance, Cheng Chumo, who was also limping with a cane.

Cheng Chumo limped, and made an ouch sound from his mouth.

He finally got his wish and settled down, but ...... The university hall still has to wait for a preliminary examination, and only after the examination will the admission be granted, of course......

In order to allow people to pass the exam better, the university hall also held an entrance exam training course, which is more expensive than the low tuition fee at the beginning of the university hall, of course...... The training is more expensive, which is also reasonable.

Cheng Chumo was sent to him by his father for training like this, all in all, that General Cheng has already released his words, Cheng Chumo must enroll, if he can't get in, the first one will kill Cheng Chumo, and then he will pull out a knife to find the third uncle of the Chen family, come in with a white knife, and come out with a red knife.

Therefore...... Cheng Chumo has become a national treasure panda in the training class, and everyone up and down the Chen family is very concerned about his studies, and Li Yifu, who was arrested as a temporary substitute teacher in the training class, has been asked by the third uncle to take special care of Cheng Chumo's studies.

At this time, Li Chengqian was pacing back and forth in the backyard of the school with a cane, and he wanted to practice more rehabilitation.

And then...... He saw the oncoming people, who were also on the staff, learning from his own example, staggering step by step.

looked closely, it was Cheng Chumo.

Cheng Chu saw Li Chengqian silently, his steps were urgent, obviously, the two knew each other, Cheng Chu grinned silently, and when he arrived in front of Li Chengqian, he was happy: "Your Highness, I didn't expect you to be ...... too"

Li Chengqian trembled with anger, raised the staff in his hand and hit Cheng silently: "The surname Cheng, you deceive people too much, you dare to laugh at Lonely, and dare to learn from Lone's inconvenient legs?" Today, Lone beat your leg lame, and you are becoming more and more unpresentable, and you dare not take Lone in your eyes. ”

After a beating, Cheng Chumo didn't dare to fight back, and hurriedly dodged, but his legs and feet were inconvenient, and the whole person fell to the ground, shouting in his mouth: "His Royal Highness the Prince, the conscience of heaven and earth, my legs have also been discounted......"

Li Chengqian trembled with anger, and waited for many people to hear the news, so he separated the two 'lame men', Cheng Chu Mosheng had nothing to love, this man with a tiger's back and a bear's waist, snorted at the moment, and there were faint tears flashing in his eyes, who did he provoke, why has everything not gone well recently, is everyone trying to beat me?

Li Chengqian was separated by Chen Zhengtai angrily, looking indignant, Chen Zhengtai explained again and again, and his face eased.

Then he said silently to that way: "This is no wonder you are lonely, if you want to blame your father, if your father doesn't discount your legs, why is there such a misunderstanding." So he dragged Chen Zhengtai and continued to ponder the thing that could fly into the sky.

For more than ten days in a row, Li Chengqian either held a textbook, or invited Cheng Chumo and the two to rehabilitate with a cane, and occasionally studied flying balls that could go to the sky with Chen Zhengtai.

Chen Zhengtai was very busy, and he didn't have time to greet him every day, except for being ground by him, he couldn't do anything, so he asked people to find cowhides and various materials, and tried to make a hot air balloon, which was to continue to urge nine disciples to copy books.

The book was copied countless times, and the nine disciples almost memorized the contents of the textbook.

But Chen Zhengtai was obviously unwilling to let them go, and still encouraged them to continue copying.

On the ninth day of October, news came from the palace and summoned Chen Zhengtai and Li Chengqian to the palace for an audience.

Chen Zhengtai already faintly felt that something was wrong, this prince didn't stay in the East Palace honestly, and came to Erpigou to harass himself all day long, the subordinate officials of the East Palace were just afraid that they were going crazy, and this time the teacher might not teach himself a lesson!

When the two entered the palace, they found that Li Shimin was not summoned in the Ganlu Palace, but in the Xuanzheng Palace, which made Chen Zhengtai breathe a sigh of relief.

It stands to reason that when the crown prince is summoned, it should be summoned in private, so it is more likely to be in the emperor's dormitory, the Ganlu Palace, and once it is in the Xuanzheng Palace, it must be about national affairs.

When the two entered the hall, they saw Li Shimin pacing back and forth with his hands behind his back, and he saw Li Chengqian and Chen Zhengtai coming in, but his eyes were raised, and then his eyes fell on the general Li Ji, Wei Chi Jingde, Cheng Yanjin and others.

There were many generals present this time, and others, such as Fang Xuanling and others, were not too prominent.

Li Shimin immediately said: "The Turks attacked my Xiazhou, the Turkic Khan Jieli, raised 70,000 or 80,000 troops, the momentum is violent, it is tolerable, which is unbearable, I want to conquer Xiazhou in person, and fight with Jieli, what do you think?" “

The Turks have always been the confidants of the Tang Dynasty, and today's Great Khan Jieli is even more eyeing the Tang Dynasty, and they have taken advantage of the chaos at the end of the Sui Dynasty to take advantage of the situation, and now they have become a force to be reckoned with.

The Tang Dynasty took Xiazhou and eliminated the Liangshi capital, but it was obvious that the Great Khan was not reconciled. This time, taking advantage of the Datang locust plague, I want to take this opportunity to teach Datang a lesson.

Li Shimin said, Fang Xuanling hurriedly said: "Your Majesty, now I have a lot of waste to be lifted, and I can't easily use swords, not to mention Your Majesty's daughter, and I can't easily move the people, the old minister thinks that now the cold winter is coming, according to the old customs of the Turks for many years, this time I brought troops here, perhaps, just to take this opportunity to loot, once I can't succeed, I will lead the troops to retreat." ”

When Li Ji and the others heard this, they became angry: "May Your Majesty give tens of thousands of elite soldiers to your ministers, and willing to go to Xiazhou to fight thieves, although the Turks are good at horse warfare, how can their combat power be the opponent of my Tang elite soldiers, if they dare to come, they will teach them to go and not return." ”

Li Shimin was also excited, but the civil and military sides were a little stubborn, Fang Xuanling and the others said very reasonably, now the country is not rich, and it is not a safe strategy to take risks easily. However, Li Ji, Wei Chi Jingde, Li Jing and others thought that since the Turks were attacking and harassing, once the Tang army was unmoved, it would shake the morale of the army.

Li Shimin frowned, and then his eyes fell on Chen Zhengtai's body, and he smiled: "Zhengtai, do you know why I summoned you here?" ”

Chen Zhengtai stepped forward: "The student knows a little bit about it. ”

"That's very good." Li Shimin pulled up his face: "In your opinion, is it war or peace?" ”

Chen Zhengtai thought to himself at the moment, this question is not difficult for me.