After seven years of fiefdom, Li Shimin asked me to return and become the crown prince.

Star-pulling technique?

The ancients studied stars at an early time, and the star-pulling technique was actually recorded in the Han Dynasty.

They used the stars in the sky to infer the location.

During the Yongle period of the Ming Dynasty, Zheng He used the star-pulling technique when he sailed to the West. This technology was earlier than the sextant.

However, although the star-pulling technique could determine the approximate location, it was not as accurate as the sextant.

"Star-pulling technique? Your Highness, do you want to learn it?" Li Chunfeng looked at Li Kuan with seriousness in his eyes.

He knew about the star-pulling technique, but it was used to determine the direction. What did Your Highness want to learn it for?

"I won't learn it!" Li Kuan shook his head decisively, and then he talked about the Star Pulling Technique and the Star Pulling Board made according to the Star Pulling Technique!

By the way, he also talked about how to use the Star Pulling Board to confirm the direction on the sea.

""Your Highness wants to go out to sea?" Li Chunfeng was surprised, but then he said,"Does Your Highness want me to be the one who follows the ship and guides the fleet?"

"No, I want you to make a sextant based on the principle of this star-pulling board!" Li Kuan shook his head and explained what a sextant is and its general shape to the surprised eyes of the two.

Then he found a ball and drew longitude and latitude with horizontal and vertical lines, with the equator in the middle.

Let them understand the principle of the sextant more clearly.

The two listened like this, seemingly considering the feasibility of Li Kuan's method and how to improve it.

"Don't worry, Your Majesty, we will develop the sextant you mentioned as soon as possible!"

After Li Kuan finished speaking, Li Chunfeng13 nodded seriously.

Now he and Yuan Tiangang have a general idea, and next, they will start to implement how to improve the plan.

Li Kuan did not urge them, but asked them to develop slowly and strive to develop the most accurate sextant.

For this purpose, he also gave the two of them several small telescopes to assemble the most important part of the sextant.

"It's curfew tonight, you guys just rest here!"

After chatting for so long, it was already midnight. Li Kuan waved his hand to signal someone to arrange rooms for the two of them. He was also tired. He returned to the house and fell asleep!

The next day!

Li Kuan was sleeping soundly when he was woken up by a series of roars.、

"ah~~~I, Old Cheng, really flew to the sky!"

"It’s so high, so high, can you fly lower?"

"Cool!"

"I, Cheng Chumo, have also flown to the sky. Zhu Ming, can you go higher?"

"Brat, don't you know your dad is afraid of heights? Even higher!"

"......"

The sound reverberated over the city of Chang'an. Cheng Yaojin's voice was so loud that it could be heard wherever he went.

It could be said that this was a disguised publicity for his hot air balloon.

"Oh my god, it's so noisy so early in the morning, can't I sleep?" Li Kuan got up in a daze and cursed a few times.

Originally, the hot air balloon would not pass over him, but in order to bypass the sky above the Taiji Palace, it had to deviate from the route.

Li Kuan was thinking whether to change the time of the hot air balloon flight!

But on second thought, everything is for money, so why not put myself in a difficult position, anyway, I can't stay for long.

After leaving the room, Li Kuan saw Li Chunfeng and the other man holding a model to demonstrate.

It seemed that the two of them had not slept all night and pieced together the structure they imagined with wood.

The old man Yuan Tiangang was even more speechless. With a pair of dark circles under his eyes, he actually wanted to look at the sun with a telescope.

"Wait, Master Yuan, do you still want your eyes?" Li Kuan hurriedly stopped him.

""Your Highness, Prince of Chu, what's wrong?" Yuan Tiangang paused as he tried to see the sun, wondering what His Highness meant.

"Taoist priest, go get a piece of paper!" Li Kuan took the telescope, pointed one of the holes at the sun, and focused the paper.

It was winter and cold!

But within 30 breaths, the paper was already charred, with signs of spontaneous combustion.

Hiss!

Seeing this, Yuan Tiangang couldn't help but take a breath.

The eyes are the weakest part of the human body. If you face the sun for a long time, it may cause irreversible damage.

"You two, please be careful when using this telescope, especially don't look directly at the sun!"

This is the most important advice

""Your Highness, I have made a simple sample according to your request. Please take a look!" Li Chunfeng handed the simple sample he made to Li Kuan.

Li Kuan took a look at it and reminded:"The telescope can be refracted with a mirror. I will ask Lingnan to make two dyed lenses!"

"Also..."

It was a simple suggestion, but he didn't understand anything else.

Li Chunfeng and the others needed to study it personally.

Li Chunfeng and the others nodded, and then said goodbye and left, but when they left, they also took Li Kuan's slightly larger telescope with them.

But not long after the two of them left, the guards came to report that Zhou Li and several others wanted to see him.

Li Kuan wanted to say no, but then he thought that these people were now his disciples, and it would be unreasonable not to see them.

"Let them in!"

It's time to paint a big pie for them today, let them experience the deception from the 21st century.

Let them become more determined on the path they have arranged. (To read the violent novels, go to Feilu Novel Network!)

Ganlu Palace

"Humph, you lost the bet yesterday, and today you come to impeach the King of Chu. Is this how Confucianism does things, to exclude dissidents?"

Li Shimin threw the memorial in his hand to the ground, his face full of anger.

There were several ministers in the hall, Fang Xuanling, Zhangsun Wuji, and some civil officials, but none of them spoke.

It's no wonder that Li Shimin got angry, he was too much.

He almost picked up every thought of Li Kuan and made a fuss about it, even the past events were brought up again.

For example:

Li Kuan slept lazily in the Imperial College, which was not in line with the royal style.

And Li Kuan disrespected his elders and compared arithmetic with Zu Chong, a master of mathematics, and even accepted Zu Chong as his disciple, which was of bad morals. He was good at creating new studies and bewitching Confucian disciples!

Another point was that he did not have the style of a wise king, and he gambled with Confucian disciples without authorization, and finally cruelly crippled the legs of Confucian disciples.

Of course, the censors who made the last two points were the most

The only thing missing is to write Li Kuan as a thug who spreads evil words and misleads the public, a tyrannical and cruel thug. No, a tyrannical prince. Do these Confucian scholars think that Li Shimin is a fool? To establish a new school of thought is to mislead Confucian disciples?

Also, that bet was voluntary for you Confucian disciples. Both sides placed bets at the beginning. If these people felt something was wrong, why didn’t they say anything at the beginning? They even rushed to see Li Kuan make a fool of himself.

Now that Li Kuan has won the bet, they are actually getting furious.

If this continues, it won’t be long before the cruel and inhumane deeds of King Li Kuan of Chu will be recorded in history books.

This is the face of these Confucian scholars, and this is also their method.

I dare not imagine what the consequences would be if Li Kuan lost the bet.

"Your Majesty, calm down. What His Royal Highness the Prince of Chu did was indeed a bit too much. It was really bloody to cripple a scholar's legs! Let these Confucian scholars and censors vent their anger!"

Zhang Sun Wuji took the memorial and looked at it, then said with a smile:"I think if His Royal Highness the Prince of Chu had not provoked the Confucian scholars during this period of time, the matter would have passed!"

Although Changsun Wuji was smiling, he was gritting his teeth in his heart.

In the past two hours yesterday, Daxing Coal Industry made a full profit of 800 strings of money from selling coal. I heard that many people have made reservations, and they may earn 10,000 strings of money in a few days.

After a rough calculation by the scholars in the mansion, if the sales volume of Daxing Coal Industry is followed, the sales volume this winter may reach 300,000 strings of money.

This is just one year. If the profit continues like this, he really dare not think about it.

How can this not make him feel painful.

At the beginning, he sold the land for less than 20,000 strings of money. Now even if Li Kuan returns to Lingnan, everyone knows that the land in Xishan belongs to Li Kuan, and it may be impossible to snatch it away.

Changsun Wuji was angry with Li Kuan in his heart, and naturally he was more inclined to Confucianism when he spoke.

Several of the ministers nodded tacitly, and the meaning was very clear. They also thought that the King of Chu had gone a little too far.

No matter what, the man's legs should not be crippled.

"Brother Fu097ji, what you said is wrong. The Confucianists made a bet with the King of Chu. The bet was originally set up by the Confucian disciples. Let me ask you, if the King of Chu loses this bet, will they let him go? I am afraid they will be even more aggressive!"Fang Xuanling also spoke at this time.

As the prime minister, although he usually relies on Confucian ministers, the actions of Confucianism are indeed very unpleasant.

They wrote the King of Chu as cruel and inhumane, and also bewitched people's hearts. What is the meaning?

He Fang Xuanling actually saw the shortcomings of the government, but the Confucianists were so powerful that it was impossible to change.

Now they just touched a little bit of the interests of Confucianism, and they started to chase after it.

Is this the gentleman they usually claim to be?

"Brother Xuanling, although there is a bet, the King of Chu is a prince after all, and he should show some kindness!"Chang Sun Wuji smiled and stood on the road.���Speak at the highest point

"Auxiliary machine.."Fang Xuanling wanted to say more.

Li Shimin interrupted them and said,"Okay, let's forget about the bet and don't mention it again!"

He just let it go and continued,"We in the Tang Dynasty have always respected culture. I think Confucianism will not lower its status to fight with a newly established knowledge!"

Li Shimin said this, which was a disguised recognition of Li Kuan's new learning, and he also raised the status of Confucianism.

So that Confucianism could not openly target Li Kuan and his new learning.

Thinking of this, he put aside the memorial impeaching Li Kuan. This matter was over with him. As for how Li Kuan and Confucianism fought, that was their business.

Li Shimin said in his heart: Li Kuan, this is all the help my father can give you.

In the small courtyard...

Zhou Li and others walked in. When they looked at Li Kuan, there was admiration in their eyes. When he went out just now, he met two Taoist priests, Yuan Tiangang and Li Chunfeng. He didn't expect that the two Taoist priests also respected their own teacher so much.

"You guys are here?"

Li Kuan put on the posture of a strict teacher. After all, he was about to start painting the pie, so it was better to be more dignified. Đạo Vô Tâm