On the way back to the Wenhua Hall in the three major halls, Wang An did not talk to Zheng Haizhu.

The little palace maids and small fire fighters they met along the way, when they saw Wang An, they were more respectful and timid than when they faced the eunuch Xue.

When he was about to reach the vicinity of the Imperial Pharmacy, he was greeted by a pink figure, like a burst of peach petals rolled by the wind.

"Ah, Princess, this is Master Zheng who wants to talk to my brother, right?"

The people in the pink dumplings stood still in front of Wang An and asked in a coquettish voice.

"What are you doing here?" Wang An's rhetorical question was cold, and he didn't take any steps under his feet.

"Oh, the brothers have been waiting for almost two incense sticks in the Wenhua Palace, and they haven't seen the master coming, so they are making a fuss about asking the slaves and maids to come out and ask."

Ke Yinyue said while quickly looking at Zheng Haizhu behind Wang An.

Zheng Haizhu followed the other party's gaze without a sign of appreciation.

There is no rule for court officials to greet palace maids.

But Zheng Haizhu sensitively judged in her heart that this was the famous nurse in history......

Hakka should be about thirty years old, and it does look like a stunner, with picturesque eyebrows and hidden style.

With intuition, Zheng Haizhu caught the gaze swept over by the Hakka family, and suddenly faded his edge, and instead floated with a hint of relief.

Shallow women often show such expressions, and they are relieved that the skin that suddenly intrudes into the same sex will not affect their ability to compete in this narrow sky.

Wang An's cold voice sounded again: "Brothers, there are companions, there are scribes on duty in the Wenhua Palace, and you are not a female official in the palace, don't come to Zhang Luo in the future." ”

"Hey, remember the teachings of the father-in-law." Ke Yinyue replied in a low voice.

While talking, when he arrived at the side hall behind the Wenhua Palace, a female official came out to welcome Zheng Haizhu to change clothes.

"Mama, you are standing here, and you are not allowed to go to the front of the Wenhua Hall until the buddies are out of class." Wang An commanded.

Ke Yin Yuewan chuckled: "My father-in-law made such a straight face, which scared the slave maid." ”

Wang An glared at her fiercely, and reprimanded in a suppressed voice: "Hak, don't think that you are the nurse of the emperor's eldest son and the opponent of the Wei Dynasty, so your bones are so light that you float around in the palace." According to the ancestral system, when your brother is six years old, you should leave the palace. You have been in the palace for many years, if you still know a little bit about it, you should be more restrained, don't behave indifferently and cause trouble for your brother! ”

Ke Yinyue lowered her eyes, the corners of her mouth were still upturned, like honey, but her heart was full of killing intent.

The eunuch surnamed Wang, don't think that he is the eldest companion of the Long Live Lord, and he will show off his might, and the old lady will one day take care of you.

Zheng Haizhu changed into the big red robe prepared by the Ministry of Rites, and came out to see Ke Yinyue standing under the corridor, bowing down and standing quietly and obediently, it is estimated that she has been made a rule by Wang An.

"Master Zheng, the slave dares to ask, how long will it take for you to give a lecture?" When Ke Yinyue passed by Zheng Haizhu, Yin Yin asked.

"What's wrong?"

"Normally, at this time, it's time for my brother to have a snack."

"Didn't the prince have breakfast today?"

"Yes, but every day, my brother and Tatsumi's friends want to eat a meal of milk skin, or Wu Ren's glutinous cake."

Zheng Haizhu stared at Ke Yinyue, but her tone was gentle: "The Ministry of Rites has not told this official that eating snacks is more important than lecturing. ”

Ke Yinyue's eyes flashed, and she immediately sneered: "The slave and maid should die, the slave and maid have offended the master." ”

Zheng Haizhu stopped talking nonsense with her and walked towards the Wenhua Palace.

Lu Xiangsheng, who didn't dare to move at the bridge, but was already anxious, was finally found by Wang An and hurried to meet Zheng Haizhu.

"It's okay, let's enter the hall, talk first, go back and talk in detail." Zheng Haizhu softly comforted Lu Xiangsheng, who was still worried.

……

In the Wenhua Palace, Zhu Youxiao and Zhu Youzhen, seeing that the prince was leading the red-robed official in, they all got up without delay and went around to the front of the bookcase.

Zhu Changluo has just ascended the throne, and Zhu Youxiao has not yet been crowned the crown prince, so the lecturer does not have to salute him, but the two princes have to salute the teacher.

The two brothers had already done this process to Sun Chengzong, who was teaching the Four Books, yesterday, but when they looked up after today's work, the curiosity in their eyes overshadowed the respect.

After all, it's a female master.

Well, this Master Zheng looks about the same age as the two maids, but he doesn't have the arrogance of Dong Li Niangniang, and he doesn't have the anger on Xi Li Niangniang's face that always looks unpleasant to anyone.

After Wang An withdrew from the palace, Zheng Haizhu smiled lightly: "Two highnesses, let's talk." I'll put the bookcase together first, I need a bigger desk. ”

"Wang Chengen, move the table." Zhu Youzhen instructed his companion to read.

He always seemed to react faster than his brother.

Zheng Haizhu glanced at the little eunuch who came up to push the table.

Wang Chengen?

Is it the one who accompanied Emperor Chongzhen to hang himself on the coal mountain after Li Zicheng captured Beijing in history?

She couldn't help but look back at Zhu Youzhen again.

In another time and space, the future Emperor Chongzhen is still a young man in his early tens, with clear eyebrows and shining eyes.

In contrast, I don't know if Zhu Youxiao, who will become the Emperor of the Apocalypse in a month, although the straight lines of his facial features are closer to those of an adult man, the expression on his face is more childish.

After the two desks were quickly put together, Zheng Haizhu motioned for Lu Xiangsheng to open the big box they brought.

A large pile of mortise and tenon mechanisms spread all over the table.

Zhu Youxiao's eyes suddenly became brighter than his younger brother.

He was about to ask what it was, but he heard a cough from outside the temple.

Everyone turned around and saw Sun Chengzong, who was dressed in a five-grade official uniform, entering the hall.

Zheng Haizhu had already been told that Sun Chengzong, the former subordinate official of the East Palace and now waiting for a promotion in Zuochunfang, was in charge of the prince's education.

"Sun Gong." Zheng Haizhu saluted Sun Chengzong.

Sun Chengzong's face was solemn: "I heard that Duke Xu, who led the lecture, is ill today, what is Master Zheng going to tell the two highnesses?" ”

"Sun Gong, the lower officials are instructed to explain the French style of firearms to the princes."

Sun Chengzong glanced at the wooden pimple on the table, and said coldly: "When it comes to firearms, do you want to learn Luban first?" ”

Zheng Haizhu came prepared, and immediately took out a copy of the first volume of "Geometric Originals" from the bookcase.

"Sun Gong, please see, this is a Taixi book taught by Xu Gong. When talking about firearms, artillery should be placed in front of the gun, because the system is simpler. However, when artillery is fired on the battlefield, it is actually much more difficult than firing guns, because the angle of incidence of the projectile must be calculated with a scale plate and a gun gauge. This brings us to geometry. As for the wooden blocks on the table, because they all have tenons, Xia Guan is working with this Lu Juren to splice them into square, circle, triangle and other shapes to assist in explaining. ”

Sun Chengzong listened to this woman's unhurried and methodical words, and the doubts in his heart faded by three points.

He paced to his desk and picked up a curved piece of wood.

Zheng Haizhu said: "This is a fan-shaped side, four fan-shaped, connected by a tenon structure, which is a perfect circle. ”

Zhu Youxiao, the eldest son of the emperor opposite, said with great interest: "I will do this." ”

I was about to reach out to splice the tenon, but I suddenly retracted it.

A sixteen-year-old boy, after many years of submissive life under the control of Concubine Zheng and Li Xuanzhi, now even Sun Chengzong, a courtier who must be a close confidant of his father, is a little afraid.

Zheng Haizhu said, "Please take it from Your Highness." ”

As he spoke, he pushed four arcs in front of Zhu Youxiao, and then pushed three straight logs to Zhu Youzhen: "This can be put together into a triangle, we calculate on the battlefield, what elevation angle to adjust the barrel to, so that the cannonball can hit the enemy, we must use the triangle." After the defeat of the white cavalry of Houjin at the head of Fushun City, my Ming Dynasty adjusted the angle of the artillery. ”

In his early years, when Sun Chengzong was not a jinshi, he went to Datong Mansion with the officials who hired him as a tutor, which was the border of the empire, and Sun Chengzong learned a lot of military experience during his wanderings.

At this time, listening to Zheng Haizhu talk about actual combat, he suddenly felt cordial, and his face finally became warm.

"Well, today's lecture seems to be more interesting than the old man taking you to recite the classics yesterday." Sun Chengzong even laughed at himself.

But the people in front of him, either his students or his subordinates, no one dared to really laugh.

Sun Chengzong waved his hand: "Don't be afraid, the old man is here to see the novelty." The six arts of the gentleman, the number of Lile shooting books, the old man looked at it, this method of attacking firearms, at least it can close the three arts of shooting, royalty, and counting. Long live Lord Shengming, taught by Xu Gong and Master Zheng, it really shouldn't be under the four books. Your Highnesses, study hard. ”