While the construction of Yanhuang College was in full swing, Li Zexuan was not idle either. In fact, he was very miserable.
"Sigh ~! This speed is not good ~! It's been almost half a month, and I've only written two textbooks. It's a bit difficult to continue at this speed ~! "
Li Mansion, West Courtyard, Study.
Li Zexuan looked at the two textbooks "Mathematics" (Volume 2) and "Physics" (Volume 1) on the table and sighed.
If someone heard this sentence, they would definitely beat him up. One must know that compiling textbooks was a task that was done by a learned scholar. It would be good if he could compile one textbook in a year. But this guy had only compiled two in half a month, and he was still not satisfied. He wanted to go to heaven ~!
However, Li Zexuan was not satisfied at all. The textbooks he wrote were all related subjects that he had learned in school in his previous life with abnormal mental strength. Naturally, others could not compete with him in terms of speed. But even so, Li Zexuan still felt that it was too slow because the academy would start in half a month. At first, he planned to open four courses for the students, but now there were still two textbooks that he had not written — chemistry and geography ~!
Of course, the textbooks he wrote were not all mechanically copied. It was not that the first grade in Yanhuang College would learn what the first grade in the modern world learned. The two schools had different academic systems, which determined that the content of each stage of study was different.
When he first wrote "Mathematics" (Volume 1) in Yanhuang College, the content in it already covered the first and second grade of primary school. But the students in the School of Mathematics had already learned almost half of the mathematics in Volume 1, so Li Zexuan wrote the mathematics in Volume 2.
As for the two textbooks that were still missing, chemistry was not bad, but it would be very troublesome to teach because the chemical symbols in it were read according to the English alphabet in his previous life. But now, it was the Tang Dynasty …
One could imagine the scene when the time came:
"Students, this is the chemical formula of water molecules," H2O "(H2O). Come, come, come, remember it well ~!"
2333333, this scene was simply too beautiful to imagine ~!
As for the geography textbook, Li Zexuan did not know where to start, because he did not know the current territory of Tang Dynasty. How could he make it up ~? Not to mention half a month, even if he was given half a year, he would not be able to make it up ~!
However, he had no choice but to set up this course. Setting aside the issue of territory, there were many concepts in geography that were very useful. For example, the concept of scale in a map, the concept of up north and down south, the concept of left, west, right, and east, the concept of latitude and longitude, contour lines, contour lines, and so on.
(Ancient maps were not based on north and south, left, west and right. Many ancient maps of China adopted the setting of north and south, left, east and right. This might have something to do with the fact that the emperor "sat in the north and faced the south". This was convenient for users to see, but there were also many ancient maps that used the setting of north and south. There was no uniform rule for this.)
As for latitude and longitude, no one in this era had defined the prime meridian (in modern times, the longitude that passes through the original site of the Greenwich Observatory in London, England is known as the 0 degree longitude, also known as the prime meridian). When he wrote the textbook, he could define the prime meridian as the longitude that a typical building in Chang 'an passed through. In this way, hundreds or even thousands of years later, everyone would look at the map according to the latitude and longitude defined by Tang Dynasty.
Besides these, the most important use of geography was to allow students to clearly understand the world, to let them know that the Great Tang only occupied a palm-sized piece of land on the world map. This would be extremely useful in the era of great voyages in the future.
"Sigh ~! How should I compile this' geography 'textbook ~? Everything else is easy, but where should I go to find information about the mountains and rivers in Tang Dynasty ~? "
Li Zexuan rubbed his chin and fell into deep thought.
"Husband ~! Are you still busy ~? This is the iced mung bean soup that I just made. Stop and have a taste ~! "
At this moment, the door was pushed open from the outside with a creak. Then, Han Yuxi, who was wearing a thin white dress, walked in with a small bowl that was emitting cold air. When she saw Li Zexuan lying on the table and thinking hard, she couldn't help but feel a little sorry for him.
"Oh ~! My wife is here ~! "
Li Zexuan came back to his senses, then stood up and looked at Han Yuxi and said, "Heh ~! My wife, why are you wasting your energy on such a hot day ~? Look at how hot you are. Let the people below do this work ~! Come and sit ~! "
Han Yuxi smiled and put the mung bean soup on the table. Then, she said unhappily, "Husband, you also know that it's a hot day now ~! Then why have you been locking yourself in the house every day recently ~! Mother and I are worried that you will get sick from being cooped up ~! I know that my husband is working hard on the matters of the academy, but you can't tire yourself out because of this ~! "
Li Zexuan's heart warmed. He stepped forward and grabbed Han Yuxi's soft hands. He smiled and said, "Wife, don't worry. Your husband has martial arts. A mere hot day can't do anything to me ~! You just have to take care of yourself ~! "
Han Yuxi rolled her eyes and said angrily, "Husband, you're lying again ~! Who said that people who have martial arts are not afraid of the heat ~! Lu Guogong, the old man, has already taken a few carts of ice cubes from our house. You still want to fool me ~? "
"Cough cough ~! This … "
Li Zexuan was suddenly speechless. Han Yuxi was right. They practiced martial arts. Although they were not afraid of the cold, they were generally quite afraid of the heat, unless you practiced the rare Yin attribute internal strength.
Han Yuxi picked up the small bowl and stuffed it into Li Zexuan's hand. She said, "Okay ~! I know that my husband is busy, but you should drink this bowl of mung bean soup first ~! "
How could Li Zexuan disagree ~? He quickly nodded and replied, "Okay, okay, okay ~! I'll drink it now ~! "
After saying that, he gulped down the bowl of mung bean soup in one gulp like a cow drinking water. A wave of unbridled coolness instantly erupted from within him, and he couldn't help but exclaim, "Refreshing ~!"
Han Yuxi smiled and put away the bowl. Then, she turned around and prepared to go out. However, she paused at the door and hesitated.
"My husband seems to have encountered some difficulties. My ability is limited, so I'm afraid I can't help much. However, my husband can go out for a walk and relax. Don't you have so many friends ~? You can ask them for help ~! There's no need to build a cart behind closed doors ~! I've been relying on the help of many people since I was young. Otherwise, I wouldn't have been able to marry my husband ~! "
After hearing this, Li Zexuan was silent for a while. Suddenly, he laughed and said, "I got it ~! Haha ~! Wife, you're really my lucky star ~! "
…
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