Huang Guanzi?
When Li Zexuan heard the name, he felt it was very familiar. After a while, he remembered that when the Yanhuang Academy entrance examination was announced, Li Zexuan had investigated the family backgrounds of the top students. As a freshman, Li Zexuan Of course there is information about Li Zexuan on his desk, so Li Zexuan still knows a little bit about Li Chunfeng.
Li Chunfeng, Taoist name Huang Guanzi, in the first year of Zhenguan, put forward 18 opinions on the Wuyin Yuanli written by Fu Renjun, a Taoist priest. Li Er appreciated his talent and learning, adopted 7 opinions, and awarded Li Chunfeng the title of General Shilang. Served in Taishi Bureau.
Now Li Chunfeng is just a young boy who has just made his mark in the court. Few people will pay attention to him, but Li Zexuan, who has traveled from modern times, understands what the three words Li Chunfeng mean. For this reason, he even asked people to check Yuan Tiangang's information!
Later, he gave up when he learned that there was currently no Yuan Tiangang in the court. In fact, Yuan Tiangang only entered the court in the fifth year of Zhenguan.
"It turns out to be Taoist Li, disrespectful, disrespectful~!"
Li Zexuan returned the salute to Li Chunfeng and said politely.
Li Chunfeng looked at Li Zexuan carefully, which made Li Zexuan feel uncomfortable. He always felt that Li Chunfeng's eyes seemed to have a penetrating power that could see through all things. Under this kind of gaze, it seemed that all secrets could not be hidden. , his heart trembled, and he quickly picked up the "Tai Xuan Sutra", fully energized his spirit, and concentrated on alert.
Li Chunfeng's face suddenly turned pale, "I'm sorry, I'm so rude. I just saw Master Hou's expression of surprise, and suddenly his old habit relapsed. I couldn't help but look at it twice more, hoping that Master Hou wouldn't blame me~!" "
Li Zexuan said with a smile: "It doesn't matter, you and I both belong to the same lineage of Taoism, so how can you blame me? I heard that Taoist is good at calendar, astronomy, and arithmetic. He is quite accomplished. If I have the opportunity in the future, I will definitely ask for advice. I hope Taoist Don’t hide your clumsiness~!”
Li Chunfeng's eyes flashed, and he cupped his hands and said: "Master Hou is ridiculous! Master Hou has been a famous teacher since he was a child. How can I dare to compare with Master Hou with his meager skills! I came here today to use the telescope of Yanhuang Academy to confirm I hope the Marquis will give me some conjectures in the past~!"
Confirm some conjectures? I guess it’s also related to the calendar, right?
Li Zexuan thought in his heart, and at the same time he promised: "You can use this telescope, the Taoist Priest. From now on, the gate of the academy will be open to the Taoist Priest at any time. The Taoist Priest can come anytime he wants to use this telescope!"
Li Chunfeng's face lit up with joy and he said, "Do you really mean what the Marquis said?"
Li Zexuan smiled and said: "Of course it's true! If my prediction is correct, the Taoist priest probably wants to use the telescope to deduce the calendar, right? Since ancient times, the calendar has been extremely important to people's farming. If this telescope can help the Taoist priest , that is also the blessing of Yanhuang Academy and this prince, isn’t it?”
Li Chunfeng's face became solemn, and he bent down and bowed sincerely: "Master Hou understands righteousness, and I admire you so much. People all over the world will definitely be grateful for your kindness, Master Hou!"
Li Zexuan expected it to be true. His main purpose of coming here today was to see if the astronomical telescope at Yanhuang Academy could help him improve the accuracy of his calendar deduction.
The so-called calendar is simply a rule for measuring longer time intervals, judging climate changes, and predicting the coming of seasons based on the natural laws of celestial changes. The calendar based on the cycle of moon phases (i.e. the synodic moon) is called the lunar calendar, and the calendar based on the earth's rotation cycle around the sun (i.e. the tropical year) is called the solar calendar.
The ancient Chinese calendar uses the tropical year as the unit of year and the synodic month as the unit of month. It is a lunisolar calendar that takes into account both the solar calendar and the lunar calendar.
As soon as the rulers of the past dynasties came to power, they usually organized officials to overhaul the calendar, because the common people's annual spring plowing, autumn harvest and other agricultural activities were all based on the calendar. This shows the importance of the calendar to the country!
Many people who know the Chinese lunar calendar may wonder in their hearts, why are the 24 solar terms in the lunar calendar that have existed for thousands of years so accurate in predicting agricultural affairs? At the beginning of spring, we need to start plowing the land to raise seedlings, rainwater needs to weed the wheat, we need to topdress the wheat during Jingzhe, wheat will joint at the vernal equinox, etc.! And every Mid-Autumn Festival, I never find that the moon is not round. Having worked for thousands of years, the creator of the calendar and the discoverer of the laws cannot help but admire him.
In comparison, the Gregorian calendar used by all countries in the modern world is simply weak!
In fact, the Chinese lunar calendar determines the year based on the "twenty-four solar terms" of the pure solar calendar, determines leap months and leap years, and uses the lunar calendar to determine the moon. The twenty-four solar terms are a purely solar calendar, so the prediction of the farming season is very accurate. Therefore, the Chinese lunar calendar is a lunar calendar based on the solar calendar correction cycle.
The twenty-four solar terms are a pure solar calendar, and its period is the same as the earth's revolution period. Observed from the earth, the moment when the sun passes the vernal equinox on the ecliptic is designated as the beginning of a new year and the end of the old year. In ancient dynasties, the Qin Tian Jian was established to conduct annual observations and corrections to ensure the accurate positioning of the vernal equinox and the accurate farming time.
Li Zexuan felt that giving the telescope to Li Chunfeng was a gift of a sword to a hero. In this way, Li Chunfeng might be able to improve the calendar, which would be a major event that would benefit the country and the people! Moreover, if Li Chunfeng discovered the eight planets in the solar system through a telescope and proposed a heliocentric theory or solar system theory, it would be regarded as a contribution to the astronomical cause of the Tang Dynasty, wouldn't it~?
"Good Lord Yong'an~! I don't know what conspiracy you used to make Doctor Sun move to Yunshan, and now you want to use this telescope to dig out my people~?"
The two of them were chatting happily, as if they were sorry for meeting each other so late, but Li Er walked over from the side and said angrily.
He had been very accurate in judging people in his life, and Li Er still had high hopes for Li Chunfeng.
"I am terrified, but I, Li Chunfeng, will always be loyal to Your Majesty and to the Tang Dynasty~!"
Maybe Li Er was joking, but Li Chunfeng hadn't been in contact with Li Er for long, and he didn't know much about Li Er's character. As the saying goes, accompanying a king is like accompanying a tiger, but he didn't dare to take Li Er's words as a He came to hear the joke, so he said quickly.
Li Zexuan didn't have any panic. He immediately realized that Old Li was joking, so he reluctantly raised his hand and said: "Your Majesty, I want to use the technology of the academy to help Li Shilang improve the calendar. I and the other two are working for your Majesty. When the Tang Dynasty worked for the common people, how could we talk about poaching people?"
Although Li Zexuan did have that idea in his heart, it was impossible for him to say it out loud!
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