I am Li Shen and Li Shimin, the free kings of the Tang Dynasty

Although Wang Xuance didn't know what Prince Ji had in mind, seeing how confident Prince Ji looked, he knew that Prince Ji must have come up with some good idea.

"Alright, you guys go do it now, I have to go to the palace."

After Li Shen finished his instructions, he stood up, and Wang Hongfu and Wang Xuance bowed and took their leave.

Li Shen changed into royal clothes and had his carriage prepared. Before getting in, Li Shen looked up at the dark sky.

Whether your mind and brain can achieve success depends on your luck.

The Taishi Bureau was one of the six bureaus and twenty-four departments, and was under the jurisdiction of the Secretariat.

The Taishi Bureau was a very large department in the Tang Dynasty. They were responsible for calendar, astronomy, clepsydra, and omen-observation.

In addition, there are other departments such as the Astronomical Institute, the Testing Institute of the Armillary Sphere and the Water Hourglass, the Bell and Drum Institute, and the Calendar Printing Institute to support the smooth development of its various tasks.

It is of great significance to agricultural production, military operations, religious sacrifices and other aspects of ancient society.

However, the head of this important department, the Grand Historian, was only an official of the fifth rank.

Li Shen's target was the Taishi Bureau.

"I see His Highness Prince Ji."

When Li Shen arrived at the Tai Shi Bureau, Shi Tou went up to report. After a while, Li Chunfeng came out with the officials of the Zhong Cheng Department to greet him.

Li Shen got off the carriage and looked at Li Chunfeng, this god-like man from later generations.

He is in his forties, with a beard, and looks a bit like an immortal.

"No need to be polite, just do what you need to do. I came here to talk to the Grand Historian about something.

Don’t bother others.”

Li Shen had a blank expression on his face. After all, he was a prince and he still had to maintain the proper dignity. He couldn't smile at everyone.

"Your Highness Prince Ji, please."

Li Chunfeng sent everyone else away and asked Li Shen to go to his office.

Li Shenyi sighed as he entered, he was indeed a mad scientist, there were papers everywhere.

There were also several semi-finished products on the table, and Li Shen didn't know what they were.

"Well...I am usually very busy and don't have time to clean up. It is a bit messy. I hope Your Highness Prince Ji will forgive me."

Li Chunfeng felt a little embarrassed and quickly packed up the papers and other things.

"Well, Mr. Li is devoted to his research, which makes me admire him very much."

Li Shen sat down and praised him.

“Thank you, Your Highness, for your understanding.

Come, bring in a kettle of boiling water."

"Li Taishi, I came here today to ask you to help me calculate something."

Li Shen came straight to the point and spoke directly.

"I don't know what His Royal Highness Prince Ji wants me to do."

Li Chunfeng asked carefully. He had long heard of Prince Ji's name, but an official of his rank was not allowed to have contact with Prince Li Shen.

He was somewhat flattered, but also a little worried, that Prince Ji could find him today.

Rumor has it that Prince Ji is unkempt, does things unconventionally, is bad at everything, and is the number one troublemaker.

So he was very worried that King Ji would ask him to calculate things that he shouldn't calculate.

It would be difficult for him to refuse then.

“Well, it’s nothing. Your Taishi Bureau has the function of observing celestial phenomena and also the responsibility of predicting the weather.

So I want Li Taishi to help me.

When will it rain in Chang'an City?"

Li Shen said it easily, as this was originally the job of the Tai Shi Bureau.

Li Chunfeng breathed a sigh of relief after hearing this. That was it.

"Your Highness, this is not difficult. It is such a small matter that you would have to trouble Your Highness to come in person.

Your Highness, just send a servant over to tell him."

Li Chunfeng said politely.

“It’s alright, I just came to take a look at the Taishi Bureau. It’s said that you have the largest number of people among the six bureaus.

They also say that you know your destiny, understand yin and yang, know the five elements, and study Qi Men Dun Jia and the I Ching and Eight Trigrams.

It sounds so magical, so I was curious and came to take a look."

Li Shen's words made Li Chunfeng's mouth twitch.

From what Prince Ji said, how come their department looks like a place for cultivating immortals?

They are just studying celestial phenomena and deducing algorithms.

The others are all related to fortune-telling, calendar modification and so on.

"Your Highness Prince Ji, these are just rumors. We don't have the ability to do that."

Li Chunfeng replied awkwardly that if they had this ability, they would have practiced Taoism long ago.

"It's okay. I know it won't be that mysterious."

Li Shen waved his hand nonchalantly.

Li Chunfeng didn't say anything either. He searched for a while and took out a memorial book.

“Your Majesty, this is the weather condition we calculated.

According to our deduction and observations of the stars over the past few nights, there is a high probability of rain within three days, but it shouldn’t be too heavy.”

After looking at the memorial, Li Chunfeng reported to Li Shen.

"Within three days? Are you sure?"

Hearing "within three days", Li Shen's eyes lit up, he sat up straight and asked.

"This... Your Majesty, I have personally deduced it. I believe in my ability, but nothing is absolute.

Many conditions can affect the results.

So...I can only say that the probability is very high."

Li Chunfeng explained that he didn't dare to say that it would definitely rain. What if it didn't, wouldn't King Ji be punished?

"Well, you are right about this. I can understand."

Li Shen nodded. Even in later generations when technology was so advanced, weather forecasts still had to be based on the weather, let alone this period.

People could see that there was a high probability of rain within three days, which was already ahead of later generations.

"Thank you, Your Highness Prince Ji, for your understanding." Li Chunfeng saluted.

"Then I ask you, if it rains, will it be accompanied by thunder and lightning?"

Li Shen asked expectantly.

"Well... I think so. Autumn is the thunderstorm season, and rain is usually accompanied by thunder and lightning."

Li Chunfeng replied.

"that would be great."

Li Shen clapped his hands. If this was true, his plan would be half successful.

"Li Taishi, you have also heard about the incident of the East Palace being struck by lightning. People outside say it is a bad omen. I wonder what Li Taishi thinks?"

Li Shen was in a good mood, so he asked about other things.

When Li Chunfeng was asked by Li Shen, he didn't know how to answer for a moment. He was studying metaphysics, and lightning strikes were originally a punishment from heaven and a symbol of bad luck.

But as an official appointed by the imperial court, he could not say anything, or he would lose his head.

Alas, I really cannot have anything to do with Prince Ji. It’s too dangerous.

After thinking for a while, Li Chunfeng replied:

“My Lord, lightning strikes have been around since ancient times and are considered to be ominous signs, but only one out of ten of them work.

In my opinion, it is just a rumor spread by the people."

“Haha, Li Taishi’s answer is quite smooth, but has Li Taishi ever thought that this thunder is not actually the wrath of God.

It is just a phenomenon, just like... Yes, just like this hot water, when you heat it with fire, it will naturally become hot and emit steam.

The same is true for lightning, it is not something so mysterious, it is just formed naturally, right? "

Li Shen looked at Li Chunfeng and smiled. He wanted to reveal to Li Chunfeng a little bit of the limited knowledge he had.

"Just like fire and water heating, naturally occurring lightning?"

Li Chunfeng was a little surprised.

(If there is no update by 9 o'clock on a certain day, it means I have asked for leave.

It seems that you are not allowed to send leave information.)