As for the book "Mathematics", with the assistance of Li Chunfeng, it also looks good.

It involves a lot of content of "Nine Chapters of Arithmetic", which has been improved by Li Chunfeng's hands, which can make it easier for students to understand when learning, and as for the very famous Nine-Nine Technique, that is, the Nine-Nine Multiplication Table, it is also in the compilation of the book "Mathematics".

After thinking about it for a while, Qin Huaidao felt that it was not enough to just die, and he also needed to add a living calculation similar to the same cage of chickens and rabbits, so he wrote a few similar questions at random and showed them to the two of them.

Guo Zhengyi picked it up and read out the inscription: "Say that there are chickens and rabbits in the cage, and the chickens and rabbits have a total of thirty-five heads and ninety-four legs, ask, how many chickens and rabbits are there?" ”

The two picked up the topic and thought about it for a long time, but they couldn't find a way to solve the problem, so they had to ask His Majesty with a red face: "Your Majesty, the ministers and Lai Ji thought about this question, and thought that there was no solution, I don't know what Your Majesty thinks?" ”

Qin Huaidao smiled and reminded the two: "Two Aiqing, this is my method of living calculation, at first glance, this problem seems to have no conventional solution, because this problem can only be solved quickly by unconventional solutions." ”

"Just imagine, if the chickens and rabbits are both trained, but people can say that the chickens and rabbits are raised one leg at the same time, how many legs are left at this time?"

Guo Zheng pinched his fingers and calculated lightly, and immediately blurted out: "There are thirty-five chickens and rabbits in total, which means that their total number is thirty-five, and if you lift one leg at the same time, you need to subtract thirty-five legs, ninety-four minus thirty-five, and the chickens and rabbits have a total of fifty-nine legs." ”

Qin Huaidao gave him a thumbs up: "That's right, at this time, I ordered the chicken and rabbit to raise one leg at the same time, and at this time, the chicken must sit on the ground with one butt, and the rest are rabbit legs, ask, how many rabbit legs are there?" ”

Lai Jimeng woke up.

"Fifty-nine minus thirty-five, and twenty-four are all rabbit legs, I see, each rabbit has two legs left, and if there are twenty-four legs left, then there are twelve rabbits and twenty-three chickens!"

"Wonderful, this question is wonderful, on the surface, it seems that students try to solve the problem in a normal way, but in fact, it not only creates a novel way to solve the problem, but also activates the student's brain. Guo Zheng was full of praise, and this question opened his eyes.

Seeing Guo Zhengyi's evaluation, Qin Huaidao added: "Not only that, the I want is not the kind of nerd who blindly reads books, after reading it, it can be used on practical matters to benefit the people, and the mind is not flexible, how to benefit the people?" ”

"There is no need to change the "National Literature Canon", as for the "Mathematics", you two will consider it again, and then come to me after revising it."

The two officials of Guozijian bowed to Qin Huai and said, "Thank you, Your Majesty, for your advice." ”

""Dahan Thought" can be handed over to Xue Yuanchao to be responsible for printing matters, I want all the schools of Dahan to learn the content of this book, and the rest of the matters will be handled by the two of you yourself."

He was so busy that he didn't have a good rest, and until he finished dealing with the affairs of the state prison, he had half a day to rest and breathe, and until tomorrow, he still needed to join the Ministry of State Affairs to educate the people recruited on behalf of the Ministry of State Affairs, otherwise many people would not understand how to conduct state affairs at all.

When he returned to the palace, he was in no hurry to go to the Manna Hall, where a large number of folds were waiting for him, and if he entered, he would not be able to get out.

After turning left and right, he arrived at Yuzhang's palace.

At this time, Yu Zhang, is bored with many palace maids walking in the palace, now these palace maids are not the nature of the previous palace maids, are all invited by the Jinyi Wei after review, in the way of employment, after entering the palace is not in the palace for a long time, with a two-year cycle, every six months can rest for a month, after two years, you can choose to leave the palace or continue to stay, of course, if the palace maid is not qualified, will also be invited out of the palace in advance.

As for the quantity, it is far less than the Tang Dynasty.

Yu Zhang was admiring the flowers in the courtyard with the palace maid Qingshuang, and couldn't help but think of Qin Huaidao, she sighed and said to Qingshuang: "Since Your Majesty returned to the palace, he has been busy with political affairs, and I don't know when I will remember that there is still someone waiting for him in the harem." ”

Qingshuang smiled and explained to Yu Zhang: "Don't worry, Your Majesty is busy with political affairs, and it is also a manifestation of patriotism and love for the people, how can such a person who loves the country and the people not remember the queen mother in his heart?" ”

"Hmph, he's a negative man, where will he remember me? You see that the lotus flowers in the courtyard are about to grow, and he didn't even think to come over to look at me, only those comments in his eyes. ”

"Niangniang laughed, the slave maid heard that a few days ago, Concubine Yan Guifei also specially boiled ginseng soup to send it to His Majesty, and His Majesty did not rest after drinking ginseng soup, like a day and a big night, it was very hard." Qingshuang said.

Hearing that Li Xueyan also took the initiative to send ginseng soup, although Yu Zhang was not jealous, but the depression in her heart was even worse, she was a little upset, and her tone couldn't help but become a little chaotic: "Hey, if you don't look at it, you can't help but look at it, it looks like it's all these things, it's not flowers and plants or some rare treasures, how can it be as much as one ten-thousandth of Your Majesty?" Let's go, go back. ”

Just as she turned her head, he saw a tall man standing at the door, but with a slightly tired face, who was it not Your Majesty?

This glance made Yu Zhang stunned on the spot.

Then she scolded angrily: "You negative man, do you still know to come back?" It's ginseng soup and brocade robe, why don't you go to Sister Snow Goose? ”

Qin Huaidao was a little surprised by Yu Zhang's tone, and he said tentatively: "Then I'll go?" ”

Where is Yuzhang willing to let him go? Immediately said: "I heard that Your Majesty was injured in Jiangnan, Yuzhang prepared some medicine and incense for Your Majesty, it is better to use it and leave." ”

"How could I be injured...... Before he could finish speaking, he was pulled into the room by Yuzhang and Qingshuang, and after some pushing, it was not lively.

After entering the room, Yu Zhang smiled and held a jar of medicinal wine, handed it to Qin Huaidao, he opened it and smelled it, a fragrance came to his face, and it smelled like a good medicinal wine.

"This is what Yuzhang specially asked for from the Tai Hospital, if there is an injury, it can be treated, and if there is no injury, it can be repaired, Your Majesty should drink it quickly." Yu Zhang looked at him with a serious face, as if he would get angry if he didn't drink.

Well, since it's a medicinal wine, there's no harm in drinking some.

He held the jar and drank half of the wine in one gulp, and then stopped.

After his stomach, Qin Huaidao only felt that there was an evil fire rising inexplicably in his lower abdomen, and his whole body gradually boiled with blood, and he couldn't help but wonder: "What kind of wine are you, such a heavy fire?" ”

Yu Zhang showed a malicious smile: "This is the deer turtle wine of the Tai Hospital, which can replenish the yang and strengthen the kidneys and help His Majesty." ”