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Chapter 302 Divine Authority: Astronomy and Calendar
……

"Astronomy and Calendar!"

A sudden flash of inspiration struck Wu Wen, and he realized it as if struck by lightning.

"Isn't Earth's timeline defined by astronomical calendars?"

The time laws of the 'Mountain and Sea Realm' don't need to be calculated from scratch, because they already exist.

That is the astronomical calendar system created by our ancestors at the beginning of Chinese civilization and still in use today.

"No wonder Taoism has always regarded observing celestial changes and creating calendars as a top priority," Wu Wen muttered to himself.

"So, they've been quietly compiling Earth's timeline all along!"

This is not only for establishing a sense of time and predicting the changing of seasons, but also for a major, little-known secret: it is for recording the Earth's time trajectory!
"So it seems that Taoism has always controlled the time code of the Mountain and Sea Realm?"

Thinking of this, Wu Wen couldn't help but smile.

It's true that the more you know, the more secrets you can discover hidden behind seemingly ordinary events in everyday life!
As a disciple of Louguan Taoism.

Wu Wen naturally had a certain understanding of astronomy and calendar systems.

The core foundation of astronomical calendars is the mysterious "ecliptic".

The ecliptic is an imaginary great circle projected onto the celestial sphere as the plane of Earth's orbit around the Sun. It represents the apparent path of the Sun's motion against the backdrop of the stars throughout the year.

Establish a coordinate system with the ecliptic as the reference plane.

This allows for precise location of the sun, moon, and other planets.

This is the beauty of astronomical positioning systems!
The 360-degree ecliptic sexagenary cycle, the 64 hexagrams of the heavens, the twelve earthly branches of the ecliptic...

Like precise measuring rods, they are used to observe the apparent motion and position of the sun, moon, and five planets.

The origin of the coordinate system is the star "Ox".

The ecliptic coordinate system, including the twelve divisions and the twenty-eight constellations, was established for observing the position of Jupiter and marking the years, thus creating a lunisolar calendar.

The year is based on the sun's ecliptic motion.

Combined with the lunar phase cycle being a monthly unit.

Constructing a time frame for Earth!

—

Astronomical calendars, as Earth's timeline, can precisely pinpoint every event that has occurred on Earth throughout history.

For example, the phrase "the year is in the constellation of Qunhuo" accurately marks the time when King Wu of Zhou attacked King Zhou of Shang in the grand sweep of history!
"It seems I'll have to seek guidance from my master, Li Chunfeng, again," Wu Wen thought to himself.

Although he already had a grasp of the content of astronomy and calendar, what he actually learned was the new "astronomy and calendar".

Throughout the long history of Chinese civilization, astronomy and calendar systems have undergone several revisions and improvements.

Every person who was able to modify astronomical calendars was a great sage of extraordinary talent.

Therefore, if Wu Wenruo wanted to obtain a complete "Chinese Heavenly Calendar", he not only had to learn the new calendar currently in use, but also had to explore the old calendar that had been abolished.

Only in this way can he obtain the complete Earth timeline.

Wu Wen took one last look at the mysterious fungal world before him.

After confirming that there were no further gains.

Then he turned and left.

Following the same route they came from, they successfully returned to the ground.

He grabbed the diamond cluster in one hand, leaped into the air, and arrived in front of He Li and the others.

"Let's go! This matter is settled," Wu Wen said calmly.

Upon hearing this, He Li and the others nodded somewhat blankly.

The image of Wu Wen displaying his extraordinary abilities was still deeply etched in their minds.

In their eyes, this was no ordinary mortal; he was practically no different from the immortals and gods recorded in books!
On the way out.

They also brought out the Turks they had rescued along the way.

After this period of recovery, these Turks have slowly awakened from their coma and are gradually regaining their senses.

Led by Wu Wen, they successfully emerged from the thick fog and left the mysterious mountain.

When He Li and the others looked up and saw the bright sun in the sky, the feeling of being saved from a desperate situation surged into their hearts like a tide, and they couldn't help but burst into tears.

"My lord, what should we do with this mountain?"

He Li looked at the mountain, which was still shrouded in thick fog, and asked Wu Wen.

"There will be a heavy rain here in four days, and the fog will dissipate naturally then," Wu Wenping replied calmly.

Upon hearing this, He Li nodded without any doubt.

Wu Wen was so certain because, according to his prediction, the weather here would indeed change in four days, with a heavy rainstorm expected.

But the real reason the thick fog on the mountain disappeared was not because of the torrential rain.

It turns out that Wu Wen had set up a thunder array on this mountain!

He used the 365 iron weapons that the lost Turkic soldiers had found when they entered the mountains as a starting point.

They were placed in various corners of the hilltop, forming a circuit array.

During a heavy rainstorm with thunder in the sky.

The lightning in the sky would be drawn down by the iron weapons high up on this mountain.

Then, these 365 iron weapons passed between each other, forming a powerful Heavenly Thunder Array. As the most violent energy in the world, the energy field formed by the condensed Heavenly Thunder could instantly clear away the spores floating in the thick fog on the mountain.

Once the spores are gone, the thick fog on the mountain will naturally dissipate after the rain stops and the sun shines through.

"Go back and report. Remember, do not reveal my information to anyone except Ashina Simo!" Wu Wen warned He Li sternly.

"Yes!" He Li nodded heavily in response, his expression solemn.

Wu Wen left with the diamond clusters he had collected, in high spirits.

3.27, multiplied by 2.38!
This large cluster of diamonds weighs over thirty tons.

From today onwards, Wu Wen no longer needs to worry about the materials.

—

Return to the site of the Turkic sacrificial ceremony.

When Hua Nu and Cai Tong saw Wu Wen return, they immediately went forward to greet him.

However, after seeing the large rock he brought back, Hua Nu asked curiously:
"Young master, is this some kind of treasure? It looks just like an ordinary stone."

“This is indeed a treasure. It looks ordinary, but it shines without being dazzling, for a divine object conceals itself,” Wu Wen replied with a smile.

Then, he placed the diamond cluster in a secret chamber of the cave, intending to deal with it slowly when he returned.

Wu Wen is now going back to Chang'an to seek instruction in astronomy and calendar from his master, Li Chunfeng.

Seeing Wu Wengang return and leave again, Hua Nu couldn't help but sigh, "Young Master, you're too tired. It's a pity I'm not capable enough to help you much!"

Wu Wen reached out and patted her head, a warm smile on his face. Without saying anything, he left.

—

Changan.

As night fell, Chang'an City was exceptionally quiet under the curfew.

However, some places remained brightly lit, especially the brothels and pleasure houses, which were even more lively than during the day, with laughter echoing in the night sky.

Wu Wenjing quietly arrived at the Li residence.

At this moment, Master Li Chunfeng was still busy in his study, the lamplight casting a long, slender shadow of him.

"master!"

Upon hearing Wu Wen's voice, Li Chunfeng looked up, and upon seeing him, his face immediately lit up with a smile as he greeted him warmly.

"Wu Wen, you've arrived!"

"Come, come and admire the latest star chart I've drawn!" Li Chunfeng said with great interest.

Wu Wenjin stepped forward to observe.

After admiring it for a while, I couldn't help but sigh that my master, Li Chunfeng, was indeed exceptionally talented in the study of astronomy.

This complex star chart, with its precise lines and detailed annotations, seems to condense the vast starry sky onto this small piece of paper.

After observing the star charts, Wu Wen took the opportunity to ask his master for guidance: "Master, I have come here today to learn about astronomy and calendar systems from you."

"Oh?" Li Chunfeng was somewhat surprised and asked curiously, "Weren't you not very interested in this kind of thing? Why did you suddenly want to learn it?"

Wu Wen did not state the reason directly, but replied: "When I was reading history books, I had some questions about the events recorded and their corresponding times, so I wanted to use the calendar to calculate the actual times of some events in the history books."

After hearing this explanation, Li Chunfeng nodded slightly, and then began to explain:

"The reason you have these doubts is that the calendar dates recorded in historical books are actually somewhat different from the calendar dates we use now."

"In addition, the ancient calendar also had some problems."

For example, the Pingshuo method used in the Huangji Calendar is actually somewhat inaccurate in predicting solar and lunar eclipses.

Therefore, there are some discrepancies in the determination of certain times.

As he spoke, Li Chunfeng turned around and took a scroll from the bookshelf next to him, then spread it out and showed it to Wu Wen.

"Look, these are some improvements and modifications I've made to the calendar over the years."

Li Chunfeng pointed to the scroll and said, "I will reinstate the fixed-day method to replace the mean-day method."

The so-called new moon determination method is to accurately calculate the actual position of the moon to determine the new moon day, making the lunisolar calendar more consistent with the laws of celestial movement.

"After years of observation, I can confirm that this improvement has significantly increased the accuracy of solar and lunar eclipse predictions and solved the problem of unreasonable distribution of months with varying lengths of 'long' and 'short' in consecutive months."

"Look again, this is the three-layered celestial ecliptic instrument that I made."

"I've added a new celestial globe, a ring of the ecliptic, the equator, and the lunar orbit, which allows direct observation of the moon's trajectory along the lunar orbit, resulting in more accurate data..."

"And here, there are also errors in the calendar calculations in the *Huangji Calendar*. 'The difference between a thousand miles and an inch in the length of the shadow' is incorrect. A quadratic interpolation algorithm should be introduced to calculate the daily shadow length..."

Listening to his master Li Chunfeng's detailed explanation of his research, Wu Wen couldn't help but look up at him, thinking to himself: Master is revising the calendar!

At the same time, Wu Wen also figured out a long-standing question in his mind.

That is, his master Li Chunfeng's own strength was not actually very strong.

However, he was highly regarded by Master Zhiyuan.

Previously, Wu Wen always thought that this was because his master, Li Chunfeng, was a disciple of the ancestor Zhiyuan, and that the master and disciple had a deep bond, so he valued him highly.

But in today's view, this emphasis is not just due to the master-disciple relationship.

His master's outstanding achievements in astronomy and calendar systems were the key reason why he was highly regarded by his grandmaster and even received special attention from the Louguan Daoist sect.

……

(End of this chapter)