The chef in the school cafeteria has a good cooking skills and the dishes they make are quite good. A simple stir-fried vegetable dish is made of seasoning with broth and salt as condiments. The taste is much better than what these children eat at home.

There was no MSG back then, and the dishes made of them were all seasoned by broth. Zhao Peng, who was proficient in cooking in his previous life, also thought about making MSG. In the memory he brought to his previous life, the earliest MSG in the world was invented by the Japanese Kikumi Ikeda. The earliest MSG was not extracted from grains by chemical means, but amigo extracted from kelp.

Ikeda Kikumi extracted sodium glutamate from kelp and made it into the world's earliest MSG, called phenolic glutamate. However, this MSG is very expensive, and it consumes dozens of kilograms of kelp, and can only extract a few grams of MSG. Tons of kelp may be difficult to extract one kilogram of MSG, which is something that Zhao Peng cannot afford.

Therefore, Zhao Peng decided to let the school cafeteria adopt the ancient Chinese soup making method to improve freshness.

The chicken back then was a luxury and was not something that ordinary people could enjoy. In those days, there were no feed-raised chickens, only chickens raised in farmland, which were expensive to make soup. Therefore, Zhao Peng asked the chef to use pork bones and sheep bones to make soup. After the protein was heated, sodium glutamate was decomposed, which was the source of the umami flavor in the soup.

When cooking, adding a little concentrated broth to make it plays a role in MSG. Of course, the cost of stir-frying dishes is also very high. In ancient times, only royal nobles and nobles could enjoy such treatment.

However, Zhao Peng believed that children were the future of the country and they had to give the best treatment to the children. So he ordered that all larger school canteens use broth to cook dishes. The dishes made in this way were naturally not available to those military households, and even hundreds of officers did not have such standard of living at home.

In the school cafeteria, because of the large batch of stir-frying dishes, in fact, it does not consume much broth when it is spread on every student, so Zhao Peng can still afford this cost.

This was the first time the students had such a delicious dish. Every child was full of oil and enjoyed the joy of this delicious food. After dinner, there was a two-hour lunch break, and the children played and played inside and outside the school. It was not until the afternoon class bell rang that they walked into the classroom.

In the first class in the afternoon, the class teacher, Wang Jincai, was still in class, but the content of the class was neither a patriotic thought class nor a three-character classic, but arithmetic class.

The real mathematics class will not be taught to students after a while, and a special math teacher will be there to teach. During this period, the content of the arithmetic class is to let children understand Chinese numbers.

Wang Jincai stood on the stage, picked up his pen and wrote on the board: One word.

Then he said to the students: "Students, this is one word. If you look at it, a horizontal line is one word."

Then Wang Jincai wrote the word "two" on the board and told his classmates: "Students, two horizontal lines are two words."

Then he wrote down the word "three" and told the students: "Three characters are three horizontal lines."

At this moment, a naughty student raised his hand. Wang Jincai saw the student raise his hand, so he asked, "Niu Er, what's your problem?"

Niu Er stood up and said loudly: "Teacher, you don't need to teach arithmetic classes anymore. I already know how to write numbers."

Wang Jincai sneered, asked Niu Er to come to the podium, and then asked him: "Then you write from four to nine."

Niu Er came on the stage, picked up a pen, wrote a four-sided horizontal line on the board, saying that it was four, and another five-sided horizontal line, saying that it was five, and then he wrote one by one. At the end, he wrote a nine-sided horizontal line on the board.

"Then you write ten thousand words!" Wang Jincai said angrily.

Niu Er started writing horizontally on the board, but he filled the entire board, and it was not tens of thousands. So he threw down his pen and turned to Wang Jincai and said, "Teacher, this ten thousand words is really difficult to write."

Xiaoya and her younger brother once saw their father write ten thousand words, but they knew that this was not the case. The siblings and brothers laughed in the audience.

"You go down!" Wang Jincao held back his anger and did not hit anyone, but asked Niu Er to go back and sit down.

Then, Wang Jincai wiped off all the words on the board and said to the students: "Students, today, Niu Er has shown a demonstration of the negative textbook for everyone! Dear students, don't think you know a little bit, and you only have a little understanding of it and think you know everything! Writing numbers is not written like Niu Er. If you write this way, it will take several days for a thousand words!"

Wang Jincai started writing one on the board: Four, and then taught the students: "This is Four, remember how to write it."

Then: write down five, six, seven, eight, and nine, so that the students can remember how they wrote. Wang Jincai wrote another cross and then asked all the students to write on their own paper.

The fifty minutes of the afternoon arithmetic class passed quickly, and most of the students had learned how to write one to ten, so Wang Jincai said: "Tomorrow I will teach you how to write the numbers later. Let's finish the get out of class first, and the next class will be the three-character classic."

The next day, Wang Jincai taught the students to write digits of hundreds, thousands, and thousands in arithmetic class, and then taught the students to write digits between eleven and one hundred. After the Chinese teacher taught the students seven days, the students basically learned how to write Chinese numbers. On the eighth day's arithmetic class, Wang Jincai asked the students to write the numbers he read by themselves. Seeing that everyone knew it, he said: "Students, from tomorrow, I will not teach the arithmetic class, but a special math teacher will teach you."

Another day passed, when the math teacher came to teach, he stood on the stage and said loudly: "Students, my name is Liu An, and I will be your math teacher from now on. A few days ago, your class teacher, Mr. Wang, taught you how to write Chinese numbers. From today on, I will teach you how to write big numbers!"

The big-sea numerals are Arabic numerals. But in fact, the Arabic numerals were not invented by the Arabs, but invented by the Indians. Later, they were passed on to the West by the Arabs, so they were mistakenly considered by Westerners as Arabic numerals.

Arabic numerals have simple strokes and easy writing. In addition, the use of decimal systems is easy to calculate, and it has gradually become popular in various countries and has become a common number in various countries around the world.

In fact, Buddhism was introduced to China as it spread to the east, but it was not accepted by the Chinese writing system at that time. Around the thirteenth to the fourteenth centuries AD, Arabic numerals were brought into China by the Arabs, and it was unsuccessful. In the late Ming and early Qing dynasties, Chinese scholars began to translate a large number of Western mathematical works, but the Arabic numerals in the book were translated into Chinese characters and numbers.
Chapter completed!