Datang Longya

Chapter 142 Warm... Heating?
The corners of Leng Feng's mouth twitched, and he felt a toothache when he saw the transcripts brought back by Changsun Chong and Yuchi Baolin... On the names of "Changsun Wuji" and "***" (indistinct), the emperor's seal was actually stamped. print!

It’s too much, the transcripts of the sons of high officials and dignitaries are required to be stamped to prevent students from signing them privately, but your eldest grandson Wuji and Yuchi Gong’s stamping of the emperor’s seal is to cause trouble. In the future, you will have to take the exam every month. The first time to go to the emperor to get a seal?

Look at how authentic the transcripts of Han Chongwen's civilian students are. Although the parents are illiterate and just pressed a fingerprint, at least they are authentic!
After reading the report card of Chang Sun Chong's class, Leng Feng breathed a sigh of relief.

There is no difference between the parents of the Tang Dynasty and the parents of later generations. The word that appears most in the written receipt is "beat", and the word that is less is "kejiner beat". Cheng Yaojin even directly asked the family general to send the "family law" come over.

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

If Leng Feng beat Cheng Chusi with this stick, Cheng Chusi had to be beaten obediently, and he couldn't even hide. Those who dared to resist were regarded as contemptuous of their ancestors, and they didn't deserve the same surname as their ancestors.

Family law is the tradition of the clan, or it is equivalent to "abuse of lynching". In this period of time, the government does not interfere much in enforcing the family law and killing people.For a clan like the five surnames, it is estimated that the family law has been interrupted.

Leng Feng does not advocate corporal punishment of students, but even the most upright Mr. Yu Huanzhi scoffed at Leng Feng's words. "A filial son is born under a stick", this is the creed of the ages, and it cannot be overthrown by Leng Feng alone.

The queen sent someone to take Liu Shuwen back to the palace. The palace is her nominal "natal home", so she can't stay at Leng Feng's house.

Sun Simiao also entered the palace with a medicine bag on his back. Liu Shuwen asked him to watch while he was treating her throat. What's more, the queen was pregnant again. Will rest assured.

Leng Feng, who had become a loner again, could only teach with peace of mind, seeing Feng An, who stood out from the crowd in the class, gave him a headache.

Lao Tzu said: "If you hear the Tao in the morning, you will die in the evening."

Confucius also said: "Study and learn from time to time, isn't it also said?"

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

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

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

"Since even Yuchi Baolin has memorized the ninety-nine product table, let's start learning the ten-digit product calculation. Come on, you are like me, and list two numbers as numbers like addition..."

Leng Feng taught on the blackboard, while Feng An studied hard at the bottom. He was a burly man sitting on a low stool, looking like a gorilla.

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

For a guy who studied hard, no teacher would dislike him, and Leng Feng was the same, so he took extra care when correcting Feng An's homework.

After grading the homework, I already missed the lunch time, but the cooks in the cafeteria have a lot of time all day, so I can definitely get something to eat now.

Strangely, Leng Feng met two brothers, Li Tai and Li Ke, who looked soot-faced in the cafeteria.

The two of them were gesturing with a pen while gnawing steamed buns on the table, which made the cook in the cafeteria yearn for it. Although they couldn't understand what the two princes were talking about, it must be a great knowledge.

Now the Academy of Arts is still laying the foundation, so the two brothers have also been requisitioned as arithmetic teachers. Today, these two guys seem to be tinkering with something in their spare time.

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

Seeing that Master came, Li Tai was overjoyed, took the paper and said, "Master, you have taught me the cold and heat convection of water, as well as heat transfer and other knowledge, and you also said that water is the most economical coolant in nature." .

Tuer suddenly thought, if you use a water tank to trap water in it, connect it to a pipe, and burn it with fire at one end, can it be used for heating like a kang? "

Leng Feng's heart skipped a beat, Li Tai is simply a monster!With just a few kinds of knowledge, he came up with the idea of ​​"heating". It's really...really...it's really speechless!
"Your idea is correct, but what are you two arguing about?"

Li Ke said: "Master, water does conduct heat very quickly, but I am thinking, if water vapor is passed into the water tank, will it be more convenient than water? It will conduct heat faster?"

This TM is another evildoer!Leng Feng only knows that some cafeterias use hot water vapor to heat pools and sterilize tableware, but the specific working principle can only be guessed at pressurization. Indeed, if the current technology can achieve the application of water vapor, it is indeed much better than pure water. quick.

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

So, Li Tai, take over your class as a teacher, and then perfect your idea, you go to the craftsman who will be the supervisor to make a 'heater' and install it in our classroom.

Now that autumn is about to begin, the classroom is so big that in winter, it is impossible to punch out the windows and light the 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. It also drips occasionally!

Li Tai's eyes lit up looking at Leng Feng's drawing of the classroom heating layout. This is a big project. If it can be completed before winter, it will indeed save the teachers and students of the Academy of Arts from freezing.

Thinking of heating, cold front thought of glass.

Now that there is no glass, some houses of the common people have no windows, only one hole is used for lighting, and only one door is left for entering and exiting when the weather is cold.

Although wealthy people have windows, if they are pasted with white paper, it will inevitably be ventilated. It is not annoying enough to check the window paper all day long.

The imperial palace is considered the most luxurious place in the world, but in winter, the door of the palace has to be covered with paper, thin and translucent animal skins. If it is really cold, just pile up fur inside and outside, and light it with candles inside.

　This was coded in the middle of the night yesterday... the next chapter may not be published until evening
　　
　
(End of this chapter)