Song dynasty.

Zhao Zhen looked at the comments on the canopy and frowned, he didn't understand, didn't the people of later generations know that there was a golden house in the book, and there was Yan Ruyu in the book?

The Great Song Dynasty can have such prosperity, but it is inseparable from these readers.

Although it also made the entire Great Song Dynasty become more literal and less military, but after knowing the ending of the Song Dynasty on the canopy, the current Great Song Dynasty has already changed.

The people of the entire Great Song Dynasty changed their fate because of the knowledge on the canopy, and the people established their own workshops based on the knowledge on the canopy, and the various products produced were exported overseas.

It also made the originally prosperous Great Song Dynasty more prosperous, and countless people were even more proud to live in Tokyo City.

But how did it come to the later generations, so many people still don't know this knowledge, and even think that the mirror is born like a human being.

What kind of ignorant person is this to make such a comment?

How Zhao Zhen hoped that the people of later generations would be able to change the world like his scholars in the Song Dynasty, but in the end he let out a sigh.

After all, he didn't know how the canopy in the sky appeared, and how he could persuade the people of later generations.

Ming dynasty.

When Zhu Yuanzhang saw the video on the canopy, he was also a little surprised, the people of later generations were so ignorant.

When he was young, he didn't read much, and after becoming the monarch of the world, he deeply realized the importance of reading and writing.

Although he has mastered some knowledge after studying hard, he still has many deficiencies compared to those famous teachers and Confucians.

Even when he governed the country, he felt struggling, and because of this, he invited many famous teachers and Confucians to the crown prince Zhu Biao, hoping that he could better govern the entire Ming Dynasty.

And the crown prince Zhu Biao really did not disappoint him, and he was very clever in all kinds of ways when helping him deal with various court affairs.

And the knowledge on the canopy has gradually changed the original Ming Dynasty, and it has also broadened my knowledge a lot, knowing that the world not only needs those scholars who are Confucian, but also needs different buses.

It also allowed Zhu Yuanzhang to see the vastness of the world, knowing that the big name of this world only occupies a corner, and there is a new continent waiting to be expanded.

Especially when he knew that the Ming Dynasty had caused the emptiness of the country's finances because of the vassal kings, he began to change his national policy since the founding of the country, and let those vassal kings seal the vassals overseas.

And how can he not be surprised that so much useful knowledge, in later generations, is not necessary for all the people?

However, thinking of the population of so many generations in later generations, Zhu Yuanzhang has some understanding, after all, the forest is big and there are all kinds of birds!

Just like his Ming Prime Minister Hu Yong, if he wasn't so proud, he wouldn't have ended up destroying the Nine Clans.

"Freedom of the Wind: Tell me where the glass came from, and the dynasties with glass are not cheap. 》

This......

The people of various dynasties felt that people did not need to worry about this, although their technology was not as good as that of later generations, but since the appearance of the canopy, the various technologies on the canopy have already been cracked by them.

And after the production method of glass was broadcast on the canopy, they had already made it and made glass mirrors for children.

If the people of the future generations really cross, they should be more worried about the lack of knowledge they have reserved, or they will only become beggars!

"Looking Forward: Sure enough, everything is fun as long as you don't take the exam. 》

"Swimming Fish: [tears] I vividly remember the experiment of the silver mirror reaction in high school, and the mottled mirrors I also made, some places are mirrors and some places are glass. 》

After the people of various dynasties saw these two comments, they did not understand it even more.

Even if they learned this knowledge when they were in school, why would anyone still make such helpless comments?

At the same time, the people of various dynasties are also sighing, the thick people have such abundant learning resources, they don't know how to cherish them!

A Drop in the Ocean: Most of today's mirror manufacturing is made by vacuum aluminum. 》

"Look at my seventy-two changes: this technology is long gone now, expensive and low-yielding. Now it is all vacuum aluminum, with high yield and high quality. 》

"Never Air Force: [Tears run] How can there be aluminum in ancient times, even if there is, it is more expensive than gold. 》

What? This technology will not be used for a long time in the future?

After the people of various dynasties saw this comment, they somewhat understood why the people of later generations did not know how to make glass mirrors.

After all, who cares about knowledge that has long been unapplied?

Only those of them who have not seen it will still think of using the knowledge on the canopy.

At the same time, they were curious about what kind of metal aluminum was, and it was even more expensive than gold.

Song dynasty.

After Zhao Zhen saw the comments on the canopy, he couldn't help but wonder how the metal aluminum was smelted.

Although he was prosperous in the Great Song Dynasty, there was a shortage of various metal coins, and some places even had to use paper instead of coins.

If he can master this technique, I believe that he will be able to alleviate the situation of lack of currency.

The emperors of other dynasties also wanted to own the metal when they saw the comments on the canopy.

After all, the more precious metals they have, the more coins they can make, and the whole country will be more prosperous.

"Holiday Notice: It is better to make convex lenses and concave lenses directly, so that not only reading glasses can be made, but also telescopes can be made. 》

"Please call me a stone: I don't feel as good as making convex lenses and concave lenses, glass mirrors are troublesome to make, and even some substances in ancient times may not be able to be made, convex lenses and concave lenses in ancient technology are completely sure to be able to do it, and whether it is to make reading glasses or telescopes are very valuable. 》

After the people of various dynasties saw the comments on the canopy, they silently memorized the two items, reading glasses and telescopes.

According to the information on the canopy, they knew that there were two things.

If they didn't dare to make the telescope because it was a military item, then they could.

I believe that after they make it, there must be a lot of people who buy it because of their old eyes.

Thinking of this, some people took action, although they didn't know how to make it.

But according to the information on the canopy, they still experimented again and again.

When the emperors of various dynasties saw the information on the canopy, they also hurriedly ordered the craftsmen to make it.

If reading glasses are made, I believe it will be a good item for the courtiers, and it will also greatly improve their efficiency.

If that telescope is made, when war breaks out, it may turn the tide and make them invincible!

For telescopes, the generals of various dynasties are even more looking forward to it, after all, they are born and die on the battlefield, but they know the role of information deeply.

And if they had a telescope, they would definitely be able to change a war.

(End of chapter)