When Zhu Youzhen taught mathematics and geometry, in order to make it easier for these soldiers to accept, the mathematical problems he compiled were often based on the assumption of the war between the Later Jin and the Ming Dynasty.

For example, in the Battle of Salhu, the Ming army's 4-way attack, how many miles each army should march every day to reach Hetuara at the same time.

Or according to the different speeds of the 4 armies, when each army should depart, in order to reach Hetuara at the same time.

Or according to the time difference between the Houjun army attacking the 4th Ming army, the marching speed of the Houjin army can be deduced, etc.

In addition, how much grain does an army consume every day with a fixed number of people? And when should the logistics troops set off so that they can replenish the troops in time and not run out of food.

Zhu Youzhen's topic is getting more and more difficult, but Zhang Shijie is becoming more and more interested, originally disdainful of lecturing, but just practicing martial arts every day, there are several veterans who have experienced the Liaodong War, and they have also begun to arrive every day.

Zhao Xiong, the leader of a family who was missing half an ear, commented privately after listening to a few lessons: "Originally, I always thought that the defeat of Salhu was due to Yang Jingluo's random planning and division of troops into four routes, which led to the defeat of the old slaves, but now it seems that the division of troops in the four roads is not without the possibility of success." ”

And Zhang An, the leader of the family, said to Zhang Shijie: "Third prince, you should go and advise Your Highness, how can this kind of knowledge that can be used for military affairs be taught indiscriminately?" If some of them have bad intentions, I am afraid that it will become a disaster for the Ming Dynasty in the future. ”

Zhang Shijie thought about it for a while, and finally decided to explain the advice of his subordinates to Zhu Youzhen. Zhu Youzhen was a little surprised, he looked at Zhang Shijie and said: "What I teach, in fact, has not exceeded the content of the Ten Books of the Sutra, how can this be a knowledge that needs to be kept secret?" ”

Zhang Shijie thought for a while, and then replied cautiously: "Your Highness, what you said does not exceed the content of the Ten Books of Calculation, but since ancient times, no one has ever linked the Ten Books of Calculation with the military, and it is still so simple to understand. Although His Highness's lecture lasted only five days, if he could use these examples flexibly, he would already be qualified to serve as a small banner..."

Regarding Zhang Shijie's advice, Zhu Youzhen didn't think anything at first, but he soon figured it out. "These ancients were not unaware of the importance of mathematics to the army, but they were reluctant to let the soldiers understand this knowledge, because this knowledge was concerned with their own dominance, and only by firmly grasping the monopoly power of knowledge could they ensure that their children and grandchildren could rule forever.

Relying on monopoly knowledge to maintain one's dominance is a castle on the beach, and when you encounter a big wave, this seemingly impregnable fortress will crumble. Because knowledge is not an antique, the more time passes, the less valuable it becomes. ”

Zhu Youzhen looked at Zhang Shijie, who had a good impression on him, and after he was silent for a while, he said gently: "Since Zhang Qianhu said so, then it is probably good, from tomorrow, I don't use these military issues as examples, okay?" ”

"The minister is panicking, the minister is just worried, among the people taught by His Highness, some people are not pure-minded, which has caused His Highness to be affected." Zhang Shijie immediately fell to the ground and said.

"Zhang Qianhu, please get up." Zhu Youzhen, who was accustomed to the etiquette of the Ming Dynasty, just held his hands emptyly and did not mean to stand up. Zhang Shijie's advice has made Zhu Youzhen vigilant, if even this kind of nobleman feels that soldiers should not be taught how to use the knowledge of mathematics, then the civilian officials of the Ming Dynasty can be imagined.

Zhu Youzhen decided to take a step back for the time being, after all, he is not Emperor Chongzhen now, and the civil officials in the late Ming Dynasty have never taken the vassal king in their eyes.

On the second day, Zhu Youzhen's math problem became, a boring game of entering and releasing water. And in the afternoon of this day, after the lecture was completed, Wang Chengen took Lian Shanxiang to the study to see him.

"What's so flustered?" Zhu Youzhen put down the brush in his hand, looked up at Lian Shanxiang and asked.

"I would like to inform Your Highness that someone came to visit Mr. Chen this afternoon, and the two talked at Mr. Chen's house for about one hour. Then I followed the man back, and after inquiring I found that he was a foreigner. Your Highness, do you want to continue to investigate? Lian Shanxiang reported back.

Zhu Youzhen's actions these days finally made Lian Shanxiang tense his nerves and have the appearance of an intelligence officer. The Prince of Shin has a cautious and meticulous personality, and he has asked again and again about the key points of the surveillance records. This let Lian Shanxiang know that this highness is not an object to be fooled. In addition, Prince Xin taught Jinyiwei to read, and he cared for some Jinyiwei who were in difficulty, which also made Lian Shanxiang feel twelve points of spirit, and the so-called death of a confidant is nothing more than that.

Of course, if Zhu Youzhen really asked him to die, he would not do it. But if it's just to track down the characters, Lian Shanxiang is still willing to work hard.

Zhu Youzhen rolled his eyes and thought for a while, before he said to Lian Shanxiang: "Is the king of the staff waiting?" There is no need to track it down, I have already exceeded the rules by calling Jinyiwei, and if I go after another official, it will be a bit too much. You should continue to keep an eye on Mr. Chen to see if anyone else is in contact with him. ”

Lian Shanxiang kowtowed and left, and he still carried 2 taels of silver in his arms. After watching Lian Shanxiang walk away, Wang Chengen finally said to Zhu Youzhen: "Your Highness, if you continue to reward you like this, I'm afraid that Your Highness's money will soon run out." ”

"Huh? So fast, how much money do we still have? Is my money so little? Zhu Youzhen asked in surprise.

Wang Chengen hurriedly knelt on the ground and said: "Your Highness's Yulu is ten thousand stones, but the actual hair is only three thousand stones, worth 1,500 taels of silver. As for the banknotes per year, they are only worth 1 tael of silver. Even the queen also took the maid embroidery to subsidize the palace's expenses, and these days in order to fill the food of the palace guards and the British princesses, there are also silver taels for rewards. His Royal Highness has begun to spend time out of the palace, His Majesty's reward. ”

"It's really a toothache, the palace is so luxurious, and the annual salary is so little, and he actually fools his younger brother with worthless treasure money, it's shameful to be too young, it's better to discount the cost of building the palace and send it to me." Zhu Youzhen's face was blue and white for a while, and he was really speechless.

However, Zhu Youzhen still calmed down and asked, "How much money do we have in our hands now, is it enough to give money to the inner servants?" ”

"Your Highness, the money of the chamberlain is still distributed by the imperial court, and His Royal Highness's money is mainly used for the food and drink in the house, the expenses of His Royal Highness and the three maidens. There are about 800 taels of silver and 2,200 stone of white rice in the treasury. ”

Seeing that Prince Xin was silent, Wang Chengen couldn't help but whisper: "Your Highness, why don't you reduce the food of the captain of Jinyi by one class, the food of the soldiers in the Beijing camp by two grades, and the food of the palace attendants to restore their original treatment?" ”

"No need, starting tomorrow, let Concubine Tian and Concubine Yuan dine with me at noon every day, and then my food will be reduced by one grade. As for the money, let's figure it out later. Zhu Youzhen just thought about it for a while and decided.

According to history, the apocalypse is about to die. He can't stay in the palace for long, so there is no need to save a few taels of silver, so that everyone in the palace thinks that he is a person who does things in an undisciplined way.

Zhu Youzhen's decision made Wang Chengen deeply frightened, since Taizu ascended the throne, the only descendants of Taizu who were willing to wronged himself to treat his subordinates were Emperor Renzong and Emperor Xuanzong.

Although Zhu Youzhen did not allow Wang Chengen to lower the food standards of the guards and guards in the palace, when Wang Chengen told the matter in private, the palace attendants, Jinyi captains, and soldiers in the Beijing camp all took the initiative to lower their food standards.

When Zhang Shijie learned about this, he also hurriedly ran to Zhu Youzhen and proposed that the food between him and the British government could be paid for by the British government. Zhu Youzhen is reluctant to let people bring their own dry food to defend themselves, and such a favor is owed.

However, at Zhang Shijie's insistence, he finally learned about this matter by lowering the first-class food standard. After the incident, Zhu Youzhen found that the attitude of everyone in the house towards him changed from the original awe to a little close.

This couldn't help but make him sigh, the people of the Ming era were really too simple. Lowering one's own first-class food is nothing more than one less meat dish. But these close guards, brocade guards, soldiers, or the family members of the British duke, all regarded this as a great act of kindness.

And the lower the soldiers and close attendants, the more they will be moved by this incident. However, Zhu Youzhen didn't feel proud for long, and he suddenly thought that these low-level people in the Ming Dynasty behaved like this. It also shows that in this era of the Ming Dynasty, there is a huge gap between the middle and upper class people and the people at the bottom.

The people who supported the lowest level of the empire did not feel the slightest concern from the upper echelons of the empire. In the face of higher and higher tax burdens and years of famine, they have no way to cry. When their wives and children are dying of starvation, but they still have to pay the increased salaries in order to recover Liaodong, how can they think that Liaodong, which they don't know where it is, will be more important than having a full meal for their families?

When the princes above the Ming Dynasty, in order to keep the so-called ancestral inheritance, disregard the dying people who have been squeezed in the country, they have to levy three salaries and build the Guanjin defense line that wastes national strength, and the peasant uprising that cannot survive is inevitable.

Zhu Youzhen knew, "The enemy he has to face is extremely powerful: the Houjin bandit group that has been constantly plundering the border of the Ming Dynasty; colluded with Houjin to make a fortune in the Jinshang Group; For his own benefit, he did not hesitate to instigate the Fujian merchant smuggling group of the imperial court to implement the policy of sea ban; Regardless of the country's financial predicament, the Jiangnan Jingentry Group, which only wants to default on taxes; collusion with businessmen, corrupt and degenerate civil bureaucracy; The hypocrite representative who talks all day long, forming a party for personal gain, the Donglin Party; Because of the lack of state revenue, it was impossible to pay food and wages in full, which led to the border army troops that left Germany and became separatist warlords; In the end, because of the famine for many years, instead of receiving disaster relief from the imperial court, the government pursued the land endowment, and the Ming peasant rebel army could not survive the rebellion. ”

Zhu Youzhen sighed, and folded the piece of paper, which was full of enemies to be dealt with, and placed it in the dark compartment of the desk. He has so many enemies, but all he has in his hands is an orthodox imperial power, and a eunuch who doesn't know how reliable he is.

Even if Zhu Youzhen opened his mind and changed from a representative of the feudal reactionary leaders to a position of serving the people, it would be in vain. The right to speak in this era was firmly held by the landlords and gentry, and the largest part of the right to speak was held by the representatives of the Jiangnan gentry, the Donglin Party.

Starting from Emperor Zhengde, the emperor of the Ming Dynasty was not scolded by the gentry. Even Emperor Zhengde personally led the army to defend the country and fight, but he was scolded by the scholars and doctors as a faint monarch who consumed food and wages and played war games. And the leopard room of the political center and the military headquarters was also discredited as a place of lewd pleasure for the emperor.

It is precisely because the gentlemen have this right to speak that they can easily influence the likes and dislikes of the people at the bottom. In this era when the imperial power did not go to the countryside, some people never left the village where they were born all their lives, and their understanding of the outside world came completely from the mouths of the local gentry.

In fact, in the late Ming Dynasty, the so-called emperor was just the most honorable prisoner in the Forbidden City. As long as the civil officials are willing, the decrees of the Ming Emperor cannot leave Beijing, so it has created the emperor of the Ming Dynasty, who is the most reluctant emperor to go to work in the past dynasties.