Datang: An eight-year-old master of the bar, he gave everyone a blow at the beginning

Chapter 372 Zhang Yaojin and Qin Qiong Fight Over the Telescope
"Young Prime Minister Yuchi, what is geomagnetism?"

Sure enough, Li Chunfeng was very interested in the reason for the positioning of the globe!

Seeing that the matter had come to an end, Yu Chihuan immediately pointed to the north and said, "Li Chunfeng, the world we live in is spherical, and there is geomagnetism in the direction of the North Pole!"

Li Chunfeng was puzzled and said: "Young Prime Minister Yuchi, I still don't know anything about poverty!"

"Li Chunfeng, is there a magnet in the Taimiao?"

Yu Chihuan didn't bother to explain, and planned to make a simple compass for Li Chunfeng!
Guidebooks are very important for sailing crews.

The Datang Navy will definitely need to go to sea in the future, so Yuchihuan will need to make a compass sooner or later.

Li Chunfeng is a Taoist priest, and they also need to determine the direction when they are looking for dragons and acupoints, so the guidebook is the lifeblood for Taoist priests.

Yuchihuan is going to hand over the compass to Li Chunfeng for production!

But Yu Chihuan was quickly surprised by Li Chunfeng's ignorance.

"Young Prime Minister Yuchi, what kind of magnet are you talking about?"

Li Chunfeng didn't know anything about magnets.

Yuchihuan took out the Shangfang sword that was rewarded by Li Er from the system space, and said, "Li Chunfeng, a magnet is a kind of stone that can be attracted to iron blocks, do you have it?"

Li Chunfeng suddenly realized: "Little Prime Minister Yuchi, the stone you mentioned is called iron stone, and we Taoists usually use it to make alchemy!"

"Is it an iron stone?"

Yu Chihuan couldn't laugh or cry: "Li Chunfeng, the iron stone you mentioned is the magnet I need, you can bring some to me tomorrow, and I will help you make a compass that can determine the direction!"

Li Chunfeng said in surprise and joy: "Young Prime Minister Yuchi, Pundao promises to bring you all the iron and stone from the Taoist temple tomorrow!"

Yu Chihuan patted Li Chunfeng on the shoulder and said, "A child can be taught!"

Li Chunfeng had achieved his goal, and immediately cupped his hands and said, "Little Chancellor Yuchi, I won't bother you anymore, let's see you tomorrow!"

"Okay, I'll go to Taimiao to find you tomorrow!"

After Yuchi Huan finished speaking, he jumped into Yuchi's carriage.

creak!

The groom of Yuchi's family immediately drove the carriage and left the Suzaku Gate of Tai Chi Palace.

Li Chunfeng didn't smile until Yu Chihuan was far away: "Those bald heads from the Buddhist family want to suppress our Taoist school recently, and when the poor Taoists make a magic weapon that can be positioned, those bald heads will definitely not dare to be rampant!"

The globe lent by Yuchi's family to Taimiao was left for Li Chunfeng to study, and Li Chunfeng was very grateful to Yuchihuan.

After a while, Li Chunfeng returned to the Taimiao, and then personally flew a pigeon to pass the letter to Longhushan, telling him that his master Yuan Tiangang and Yuchihuan had given the globe to the Taimiao.

After writing the letter, Li Chunfeng left the Taimiao again, and ran to the Taoist temple inside the Taiji Palace to carry the alchemy material—magnet!
Soon, Li Chunfeng returned to Taimiao with a large basket of magnets on his back.

"These iron stones should be enough for the young Prime Minister Yuchi, right?"

Li Chunfeng thought that the compass that Yuchihuan said was as big as a globe, and worried that the magnets were not enough.

After finishing these matters, Li Chunfeng went to the Taimiao to study the globe with satisfaction.

On the other side, Yu Chihuan was not idle when he returned home. In order to make a compass, he asked the blacksmith at home to make a simple compass.

The four directions of the compass mark the four directions of east, west, north and south respectively!

As for the five elements and eight trigrams of the other heavenly branches, Yuchihuan is going to hand over to Li Chunfeng, a Taoist priest, to make them!
Of course, professional things should be handed over to professional Taoist priests.

That night, Yu Chihuan took a bath and went to bed after eating a full meal!

……

Chang'an City, Tai Chi Palace!
Early the next morning, Yu Chihuan went to court as usual.

At the entrance of the six departments of the three provinces, Yu Chihuan was immediately pulled by Cheng Yaojin to the Ministry of War.

When he arrived at the Ministry of War, Yu Chihuan discovered that Qin Qiong, Li Jing, and Duan Zhixuan, the generals of the Tang Dynasty, were all there.

Even Yuchi Huan's cheap father, Yuchi Gong, stared at him with a smile on his face.

"Cheng Zhijie, what do you want from me?"

Yu Chihuan looked at Cheng Yaojin in confusion.

Cheng Yaojin laughed heartily and said, "Prime Minister Yuchi, I heard from His Majesty that you have an astronomical telescope for observing the sky, can you show it to Uncle Cheng?"

"Uh...Cheng Zhijie, are you sure His Majesty told you this?"

Yuchi Huan was speechless. Li Er's big mouth must have been intentional.

"Young Prime Minister Yuchi, deceiving the emperor is a serious crime. I, Cheng Zhijie, still know the seriousness. Hehe, of course His Majesty told me about it!"

Cheng Yaojin explained to Yuchihuan very frankly.

Yuchi respectfully echoed, "Huan'er, Qin Shubao and Cheng Zhijie helped His Majesty guard the gate last night. His Majesty used the astronomical telescope you gave him to observe the sky at night, so Cheng Zhijie and the others knew about it!"

Qin Qiong nodded and said yes: "Young Prime Minister Yuchi, you should believe your father's words, right?"

Seeing Yu Chigong helping him, Cheng Yaojin nodded gratefully to him, this buddy is not in vain!
Yu Chihuan thought for a while, and immediately took out the already made telescope from the system space and said: "Cheng Zhijie, the astronomical telescope is not suitable for you, but this telescope is suitable for your generals to march and fight!"

After finishing speaking, Yu Chihuan took off the protective case of the telescope, and then demonstrated it to Cheng Yaojin and the others.

At present, the telescope made by Yuchihuan can see people five kilometers away.

People within one kilometer seem to be close at hand, and the clarity is comparable to that of later optical telescopes.

This is also related to Yuchihuan's use of pure crystals to make concave and convex lenses!

If Yuchihuan used crystal stones with many impurities to make lenses, the accuracy of the telescope would definitely not be good.

Qin Qiong, Cheng Yaojin, and Yuchi Gong surrounded Yuchihuan enthusiastically. They were very interested in the two cylinders with colored glaze in Yuchihuan's hands!

Telescopes include single-lens and double-lens telescopes, and Yuchihuan makes binoculars!

Yuchihuan confirmed that there was no problem with the telescope, so he immediately handed the telescope to Cheng Yaojin for trial use!
Cheng Yaojin said in surprise and joy: "Thank you, Young Chancellor Yuchi!"

After all, Cheng Yaojin took over the telescope, and then imitated Yu Chihuan to use the telescope.

Qin Qiong also wanted to try the telescope, so he stood in front of Cheng Yaojin and pointed his nostrils at the telescope lens!
As a result, two dustpan-sized nostrils appeared in front of Cheng Yaojin's eyes, and even the fluff and booger inside the nostrils were clearly visible, which shocked him immediately!
"Ah... whose nostrils are so big!"

Cheng Yaojin was so frightened that he took a step back, only to realize that the reckless Qin Qiong was standing in front of him.

Qin Qiong laughed and said, "Cheng Zhijie, you've used up the binoculars, it's the old man's turn!"

Cheng Yaojin found out that it was a false alarm, so he stopped immediately and said: "Qin Shubao, can you step aside, your nostrils were too scary just now!"

"Cheng Zhijie, why did the old man's nostrils offend you?"

Qin Qiong rolled up his sleeves, ready to have a fight with Cheng Yaojin.

Cheng Yaojin is also angry, ready to fight Qin Qiong!
Yu Chigong immediately grabbed Qin Qiong and said: "Qin Shubao, when the imperial court is over, you can fight back before it's too late!"

"Okay, Cheng Zhijie, we will have a martial arts competition when we retire!"

In the end, Qin Qiong followed Yu Chigong's suggestion and temporarily released Cheng Yaojin.

(End of this chapter)