After less than half an hour of class, Zheng Haizhu was convinced that Zhu Youxiao was not "illiterate" as later generations said.

Although the first volume of "Geometric Originals" is simple and mainly focuses on defining concepts, and Xu Guangqi's translation is accurate and straightforward, an illiterate person will never be able to read and understand "no point is not divided, no length, no breadth, narrowness, thickness and thinness; The line is long but not wide, try to be like a plane of light, and there is no light between the light and the light, and there is no room for a line".

In fact, as for the statement that Zhu Youxiao is illiterate, Zheng Haizhu did not believe it in the modern age of his previous life.

If you don't go out of the cabinet to study, it doesn't mean that there is no one in the inner court to give the princes an enlightenment education on literacy and hyphenation.

Wanli's mother, Zhu Youxiao's great-grandmother, Empress Dowager Li, did not die until the forty-second year of Wanli. Zhu Changluo was born to Empress Dowager Li's palace, and Empress Dowager Li has always defended Zhu Changluo's family, how could he let the emperor's grandson become illiterate.

The Ming court had an inner study system, and so many eunuchs with excellent cultural level in the deep palace could carry out basic enlightenment for the princes.

"The eldest son of the emperor turned out to be quite literate." Zheng Haizhu waited for Lu Xiangsheng to finish a few sections for the two teenagers, and suddenly spoke.

Zhu Youxiao was stunned for a moment, and then he was slightly stunned: "What does Master Zheng mean by this?" When I was ten years old, I had finished reading a thousand-word essay. ”

Zheng Haizhu said: "Your Highness, don't worry, just because in the past few years, Your Highness has not been out of the pavilion to study, and there are long rumors outside, saying that you are illiterate." The lower officials don't believe it, but today they just sigh that even the nobles of Tianhuang can be destroyed and destroyed, and those capable ministers and loyal ministers have nowhere to complain when they encounter a joint attack by political enemies. ”

Zhu Youxiao let out an "oh" and loosened his brows.

After all, he is a young man, and his mind is really completely ambiguous, and he can't help but sigh: "I told my fifth brother a long time ago that wood is much better than people, even if wood is rotten heart, it will not hurt people, and if people's hearts are rotten, it is too terrible." ”

Zheng Haizhu said in his heart, golden sentences, this is, who said that Zhu Youxiao was stupid?

But listening to Zhu Youzhen on the side, he said: "If the wood rots the heart, it will also harm people, and the house will collapse." ”

Zheng Haizhu smiled at him: "Yes, if the materials are not properly cared for, the repair is not thorough, and even the beginning is to cut corners, it will also harm people, and even mislead the country and the people." For example, the copper and iron materials used to build firearms, such as the gunpowder as an introduction, the forging process, and the proportion of compatibility are extremely exquisite. ”

She stopped and gave the right to speak to Lu Xiangsheng: "Let Lu Juren tell you about the standards of various firearms, all of which are in the North and the South China Sea, and the Tartars and Red Hair are particularly energetic." ”

From the school, by the two brothers, and then in the hands of the women of the deep palace, how could the boy's nature be lost, and when he heard that he was going to talk about fighting and killing the enemy, he was even more energetic.

Lu Xiangsheng taught in Zheng Haizhu's Songjiang School four years ago, and today he has returned to his old profession and is very handy, not only drawing pictures to explain to the two brothers, but also taking out the mini nest car made by the craftsmen in Beijing in the past few days, as well as a thing called "hanging curtain".

"Your Highness, please see, the nest chariot was used for siege, and the soldiers ascended to the roof of the chariot in wooden boxes with axles, and suppressed the defenders of the city with firearms. And this hanging curtain is used to defend the city, but the two ends of the convex wooden work, between the battlements, the felt blanket or cotton quilt covered on the wooden pole, poured through water, can resist fire oil arrows and bullets. ”

The teacher spoke vividly and meticulously, and the students listened attentively.

Zheng Haizhu took a few steps back, looked at Zhu Youxiao and Zhu Youzhen, and their respective accompanying eunuchs, all pouting their buttocks, their upper bodies almost lying on the desk, leaning their heads against each other to watch Lu Xiangsheng's demonstration.

That's what she wants.

She pursed her lips in satisfaction, turned around to drink the tea poured by the waiter, but suddenly saw a pink figure flashing at the entrance of the hall.

Zheng Haizhu paced to the door, and the Hakka came up with a soft and flattering smile, and said to an ebony food drawer on the corner of the wall: "Master Zheng, there is dim sum inside, and the slave maid will come in and serve my brother to eat, right?" Chef Zheng also eats a few pieces, the cakes in the imperial dining room, you ordinary people can't eat them outside, especially the milk crisp, which is ......"

"Come in." Zheng Haizhu interrupted her and said with a blank face.

Ke Yinyue let out a low "hey", entered the hall, and began to make food boxes.

Zheng Haizhu watched her green jade fingers fly up and down for a long time, and when she walked to the desk with a plate, the gaze in her apricot eyes had switched to a charming appearance.

"Brother, I'm eating milk."

Ke Yinyue spoke gently.

Lu Xiangsheng, who was engrossed in teaching the wit, turned his head sharply, and was startled by the peach blossom demon-like woman, and reacted that it was about the nurse and grandmother of the princes, and hurriedly lowered his eyes and retreated to the side.

Ke Yinyue said in her heart, such a handsome son, who is not wearing an official uniform, and follows the mother-in-law surnamed Zheng gently, it is not the little white face she raises.

But she quickly stopped her dirty association, and said softly to Zhu Youxiao: "Drenched in osmanthus nectar, brother eat it quickly." ”

Zhu Youjiao pondered a lifting mechanism in the nest car, but was suddenly interrupted by the Hakka family, and a trace of impatience flashed across his face.

"If you don't eat, you're busy, and you're not hungry, what kind of milk and skin do you eat?"

Ke Yinyue choked, and then it was still as if there were cotton dumplings stuffed in her throat and eyes, and she said softly: "Eat a few bites and then lecture, you can't delay the hour, come, this little gentleman, you can eat too." ”

"Mama Ke!" Zhu Youzhen saw Ke Yinyue's light gaze swept back to Lu Xiangsheng's face, and suddenly felt that he had lost the people of his Zhu family, and a young man's spirit soared, and he immediately shouted, "This is Wenhua Palace, Mr. is lecturing, you go out." ”

Ke Yinyue's hand holding the pastry plate retracted, and she looked at Zheng Haizhu: "Master Zheng allowed me to come in." ”

Zheng Haizhu walked over and said to her in a gentle voice: "I am a lecturer, I can allow you to come in, but this Wenhua Hall is also the courtyard of the Son of Heaven, the five princes let you out, you can go out." ”

"Alas, Mama, don't disturb you first, just wait outside the hall." Zhu Youxiao made a final decision.

He now sees that his younger brother doesn't like the Hakka family, and he is afraid that his younger brother will say more harsh words, if anyone outside the sect hears it, he will announce the turmoil to Wang An, and simply blast his mother away first.

Ke Yinyue only felt that her cheeks were hot, and she was annoyed in her heart, but after all, she only flattened her mouth, turned around and made eye contact with Zheng Haizhu, immediately moved away, retreated to the outside of the hall, and sulked under the corridor of the side hall.

"Mama has a big temper," Zheng Haizhu shook her head with a smile and said to Lu Xiangsheng, "Let's go on." ”

At the end of the day's lecture at the beginning of the afternoon, the two brothers of the Zhu family were still unsatisfied.

The palace prepared lunch for the speaker, and when Zheng and Lu went to eat with the waiters, Zhu Youxiao also came out with his younger brother, pointed to the small river east of the Wenhua Palace, and suggested with great interest: "Master Zheng, Mr. Lu, when you come back to the lecture in a few days, you can use the other place to simulate a water battle, right?" ”

Zheng Haizhu glanced at Lu Xiangsheng and said with a smile: "Your Highness, when Mr. Lu was in our school, he was in the pond in the garden and told the students about turtle boats. ”

Zhu Youzhen also raised his face, and his eyes were as bright as falling stars: "What is a turtle boat?" ”

Lu Xiangsheng said: "It is a very interesting and powerful warship, and the sailors of North Korea used this ship to defeat the Japanese people. The exterior of the ship resembles a turtle, but the inside contains many doorways. ”

Zheng Haizhu added in a timely manner: "Your Highness loves wood art, and the next time I teach, the two of us will bring some new materials and work with the two Highnesses to make a turtle search boat." ”

"Good! So, what day is the next time? Zhu Youxiao's expression at this time was as eager as a reader waiting for more online.

Zheng Haizhuwaner: "Master, I'll go and ask Sun Hanlin, Your Highness don't worry, if it's a few days late, it may not be bad, more time, the mechanism that Mr. Lu and I brought can be better figured out." ”

She paused for a moment, and then told the two teenagers with an admittedly wistful meaning: "The lessons of Master Sun and other masters, whether it is the interpretation of the Four Books or the way of agriculture and mulberry, are also the best knowledge in the world, you must spend your time to learn." Besides, if you are biased, I am afraid that Mr. Lu and I will not be able to come again. ”

Her last sentence lowered her voice.

Zhu Youxiao and Zhu Youzhen understood that the two teachers in front of them were not famous ministers or Hanlin Academy, if they were accused of misleading the prince and being obsessed with strange tricks and tricks, the identity of the lecturer would be gone.

This realization made the two young men suddenly feel closer, as if they were comrades in the same camp as Master Zheng and Mr. Lu, just like the guns launched from the nest car and the infantry attacking the city under the nest car.