The corners of Leng Feng's mouth twitched, and he felt a toothache as he looked at the report cards that Changsun Chong and Yu Chi Baolin got back......... On the names of "Eldest Sun Wuji" and "***" (indistinct), they are actually stamped with the emperor's seal!

It's too much, the transcript of the son of a high-ranking official and dignitary requires a seal, in order to prevent students from signing privately, but your eldest grandson Wuji and Wei Chigong are going to do something with the emperor's seal, and in the future, you have to go to the emperor to seal it again and again?

Look at how real the transcripts of the civilian students on Han Chongwen's side are, although the parents are illiterate, they just pressed a handprint, but at least it is true!

After reading the transcript receipt of Changsun Chong's class, Leng Feng breathed a long sigh of relief.

There is no difference between the parents of the Tang Dynasty and the parents of later generations, and the word that appears most in the written receipt is "beating", and the less word is "Ke Jiner beating".

The family law here does not refer to the laws of the family clan, but a jujube stick with a strip of cloth tied with a hole at the end, which is used to beat people.

If Leng Feng beats Cheng Chuhei with this stick, Cheng Chuhei must be beaten obediently, he can't hide, and those who dare to resist are regarded as contemptuous of his ancestors, and he is not worthy of the same surname as his ancestors.

Family law is a clan tradition, or equivalent to "abuse of lynching", and at this time in time, the government does not interfere much with the execution of family law to kill people, and at most fines are fined. For clans like the five surnames, it is estimated that the family law has been interrupted, and I don't know how much.

Leng Feng does not advocate corporal punishment of students, but even the most upright old Mr. Yu Huanzhi scoffs at Leng Feng's words. "Filial piety comes out from under the stick", this is a creed for thousands of years, and it is not something that Leng Feng can overturn with a single word.

The queen sent someone to take Liu Shuwen back to the palace, which was her nominal "maiden home", so she couldn't stay in Leng Feng's house.

Sun Simiao also entered the palace with the medicine bag on his back, Liu Shuwen treated his throat and asked him to watch from the side, not to mention that the queen was pregnant again, and the last child was miscarried, so Li Shimin attached great importance to this birth, and specially asked Sun Simiao to enter the palace to take a look.

Leng Feng, who has become a loner again, can only teach with peace of mind, looking at Feng An, who stands out in the class, has a headache.

Lao Tzu said: "When you hear the Tao, you can die at night." ”

Confucius also said: "When you learn and learn it, don't you also talk about it?" ”

Leng Feng also said to others: "Live to learn." ”

There is not much relationship between age and learning, so Feng Ang took half of his treasure into the palace to "pay tribute" and asked for the emperor's will to "allow Geng Guogong to learn arithmetic".

Li Shimin praised Feng An's behavior in the holy decree, and the court was also full of praise.

"Since even Yu Chi Baolin has memorized the ninety-nine product table, then let's start to learn the multiplication and calculation of the product of ten digits, come, you are like me, list two numbers into an additive number........."

Leng Feng taught on the blackboard, Feng Ang studied seriously underneath, and he was burly sitting on a low stool, looking like a gorilla.

But Feng Ang didn't feel embarrassed at all, carefully wrote down every word Leng Feng said, and asked Changsun Chong angrily when he didn't understand something. Even the homework left by Leng Feng, he will complete it conscientiously.

For a guy who studies seriously, no teacher will not like it, and Leng Feng is the same, so he is also extra careful when correcting Feng An's homework.

After correcting my homework, I have missed lunch time, but the cook in the cafeteria has a lot of time all day, and I am sure that I can have something to eat now.

It was very strange that Leng Feng met the two brothers Li Tai and Li Ke with soot in the cafeteria.

The two of them were eating steamed buns on the table while holding a pen to compare something, which made the cook in the canteen yearn for it, although he couldn't understand what the two princes were saying, but it must be a great knowledge.

Now the Academy of Literature is still laying the foundation, so these two guys have also been requisitioned as arithmetic teachers, and today these two guys seem to have taken advantage of their spare time to tinker with something.

Leng Feng walked up to the two people who were arguing and asked, "What are you two arguing about?" ”

Li Tai was overjoyed when he saw that Master was coming, and took the paper and said, "Master, you have taught me about the convection of hot and cold water, as well as heat transfer, and you also said that water is the most economical coolant in nature.

On a whim, if you use a water tank to trap water inside, connect it to a pipe, and burn it with fire at one end, can it be used for heating like a kang? ”

Leng Feng chuckled in his heart, Li Tai is simply a demon! With just a few pieces of knowledge, he came up with the idea of "heating", really...... It's true......... It's really speechless!

"You're right, but what are you two arguing about?"

Li Ke said: "Master, water does conduct heat very quickly, but the apprentice is wondering, if water vapor is passed into the water tank, will it be more convenient than water?" Conducts heat faster? ”

This TM is another demon! Leng Feng only knows that some canteens are heated pools with hot water vapor and disinfect dishes and chopsticks, but the specific working principle can only be guessed at the pressurization.

Leng Feng patted the heads of the two brothers and said, "Your two ideas are very correct, but Li Ke, your ideas cannot be realized at this stage."

So, Li Tai, the teacher will take over your class, and then refine your ideas, and you will go to the craftsman who will be the supervisor to make the 'heating' and install it in our classroom.

Now that autumn is approaching, the classroom is so big, and in winter, it is impossible to make holes in the windows and make a stove to keep warm. ”

After speaking, Leng Feng drew a picture according to the appearance of the boiler and heating in his mind.

Although Datang's iron-smelting technology is not enough to make threads, they should be able to make inferior iron pipes, as for the connection problem...... There is no rubber, just drop a little water, the heating sealing conditions are so good in later generations, and the heating will occasionally drip water!

Looking at the composition of the classroom heating arrangement drawn by Leng Feng, Li Tai's eyes lit up, this is a big project, if it can be completed before the winter, it can indeed prevent the teachers and students of the Academy of Literature from being cold.

Thinking of heating, Leng Feng thought of glass again.

Nowadays, there is no glass, and some of the people's houses have no windows, so there is only a hole for lighting, and when it is cold, there is only one door left for entering and exiting.

Although the rich and noble have windows, but paste white paper, it is inevitable that the wind is breathable, and it is not annoying enough to check the window paper all day long.

The palace is the most luxurious place in the world, but in winter, the palace gate must also be covered with paper, thin and translucent animal skin, it is really cold, then pile up fur inside and out, and use lamps and candles to light it inside.

This was coded in the middle of the night last night...... The next chapter will probably be released later

(End of chapter)