[System] Datang Baby's Growth Diary

The study room is purposely arranged to be very dark. When the door is opened, the veils are layered on top of each other, and only a little light from the outside can penetrate.

The three of them stepped into this dark room together like little friends who went hand in hand (not) to explore a haunted house. "Kuro, what's the meaning of this?"

"Come with me." Yu Jiu ignored their doubts, and walked ahead with short legs to lead the way.Li Yue and Si Kongshu didn't know why, but their curiosity arose, and they hurriedly followed him to the living room of the study.

When they saw the scene in front of them, both of them couldn't help but rubbed their eyes, and cried out in shock: "This! What is this?!"

I saw that when I walked in again, I opened the veil, and a beam of bright yellow light came towards me, lighting up the dimly lit inner room, and the shadows of the three of them were stretched.Si Kongshu raised his long sleeves subconsciously, trying to block this weird light.This warm light is not dazzling, even very gentle, like the dark glow of the setting sun at sunset, no! It is a bit brighter than that, compared to candlelight, and even more like a firefly compared to a spotlight, illuminating the whole room.Yu Xiaojiulang, who was standing at the light source, was also completely covered in it, and the light poured down from his head, and in an instant, he was like a god or Buddha.

For a moment, Sikong Wenchu ​​thought wildly: Could it be that Jiulang really came down to earth as a fairy boy like in the legend, and he was able to hide a round of warm sun in the study.It can be seen with a clear eye that it is not the light that candlelight can emit.

When the two of them got used to the light, they reluctantly suppressed their astonishment, but looked left and right around the lamp socket and asked frequently whether it was He Zhen's miraculous object, which would naturally emit light.Only then did Yu Jiulang begin to shake his burden unhurriedly.

This is the handwork given by the system, heck, the homework for the practical class, and the drawing of the desk lamp that won the first prize in the entrance examination of the prefectural school just came in handy.

Interstellar flash charge desk lamp for students, produced by Aiyingbao Company, 5 minutes in the sun will illuminate you for [-] hours. It is a must-have for children to go to school. It is an artifact that will accompany you to study until late at night!

The principle of the desk lamp is very simple. It does not involve high school physical principles such as electrothermal luminescence and electromagnetic theory, nor does it use tungsten wire and other metal wire materials to emit light, but a simple chemical reaction.This is due to the built-in scanning detection system of the system, which was originally intended to protect the safety of the baby and prevent the accidental occurrence of deadly substances around it. In Datang—the ancient human mode of the primitive planet, it was forcibly requisitioned by the system for geological scanning. Scanning range: small planet level.

The scanning results show that there are some kind of ferns that will be extinct in the future on this planet, and they are distributed in Jingzhou, Mianzhou, Yuezhou and other places, which is also the edge of Shennongjia, which is famous and mysterious in later generations.This is a kind of fern called sun fern. After a series of refinements, as long as it is mixed with its companion luminous sand, a substance like black beans, a series of reactions will occur to last Shine bright.And when it is dawn, when it is illuminated by light, it will immediately undergo a reverse reaction, separating into the original two substances, and repelling each other.

This is something similar to fluorescent powder, but it is brighter and more durable than it. If there is no external damage, this chemical reaction can last for more than ten years. It can be called the most eternal "love and kill" in nature.

These two materials were chosen as the wick of the desk lamp, which was perfect in the ancient times when there was no electricity. Some mechanism designs were used in the middle, and finally the console lamp could be turned off with a hidden button.

In this way, the environmentally friendly, clean, natural and pollution-free Datang table lamp was born!

This is a moment that changes history!This is a moment destined to be recorded in history!This is a moment worthy of the cheers of thousands of people!

On this day, the lighting lamp was born.

From this day on, people were liberated from the confinement of night, light was introduced into the human world, and night completely turned into day.Since then, people have got rid of the previous state of having no lighting and can only work at sunrise and sunset, and have more time to create social wealth and value, and move towards a well-off life of "everyone's lights tonight".

↑↑↑Except for the last sentence, are the above sentences very familiar, as if they have been read in a certain book?Is it my illusion?

hehe. ——"The Significance of the Invention of the Electric Light in the Modern History of High School History of the People's Education Edition", "Biography of Edison", "Ten Inventions That Affected Human History"...

However, this historic moment was witnessed by only two teenagers who are still unknown and a little famous little Douding.

Of course, Yu Jiulang didn't go into details about the methods of those table lamps above, but just briefly mentioned them. This is a commercial secret!After Yu Xiaojiu ostentatiously demonstrated the operation, "This... this is unbelievable... I can't believe my eyes! Jiulang, you! You are a genius! A unique genius!" Gentle as Sikong Shu saw such a transcendent What he imagined was also stunned.I originally thought that the so-called desk lamp should be a beautiful lantern or something, but I didn't expect it to be such a magical object!

But Li Yue, as a member of the royal family, thought further.The way of night lighting in the Tang Dynasty is still very primitive. The better people use candles, but the poor people still use the fire pit, that is, dig a groove on the floor of the house to burn charcoal or firewood in it. It can be used for heating in winter, but It's not very practical in summer.Sometimes charcoal poisoning also occurs.Other countries in the world probably don't even have candles, and these things are only available inside the house, and they are not very practical outside, not to mention expensive and troublesome.but!All of the above lighting tools have a big disadvantage!That is, the lighting is dim and the lighting range is very limited!

If there is such a lighting fixture, the holy light will shine on the Tang Dynasty; the Tang Dynasty will never have a dark night.

Li Yue is sensitively aware that if the production cost of the desk lamp is not high, this will be a deal with great potential, and it may even change the history of the empire.

"Jiulang is really knowledgeable and knowledgeable, and he can make such a fetish." The three of them were sitting in the gazebo just now, drinking tea and talking with the spring scenery outside the pavilion.

Obviously, both of them are very satisfied with today's "show", and the topic has been revolving around it.

Even Sikong Shu, who was always introverted, started talking too much. The handsome young man bit his lower lip, stroked the white sleeves of his robe, and said with a smile: "Since I was young, my family was poor, so I couldn't afford yellow wax and other lighting at home. When I was studying, I could only seize the time to work hard at dawn. When it was dark, the whole family could only go to bed early to rest. This thing is thousands of times better than candles and kerosene lamps. Based on my own experience and imagination, I will go to the big Look, if every household can use this thing, it will be more convenient, and more importantly, the working time of the people will be extended. This extended working time is like the extra life span, instead of being wasted vainly in sleep, The extra time can be used for more beneficial things, such as reading, engaging in other labor, etc. If things go on like this, the knowledge of the whole country can be improved, and the people can live and work more peacefully. It is a great good for the country and the people!"

"Yes! Will this item be sold in Yu's Firm? Ever since he experienced the charm of the table lamp, what Li Yue is worried about now is that if this item is not easy to make, what should he do if it is difficult for him to buy it.

Yu Xiaojiu hadn't thought of this before, but after being reminded by them, she knew that this was another great thing to earn charm points and small money, so she nodded and said, "Yes, this thing is not difficult to make. Wenchu ​​and Zaibo like it. That’s fine, I’ve prepared three lamps for you and Da Lu, and you can use them for reading at night, so as not to damage your eyes.”

The two of them readily accepted their friend's concern.Yes, the two of them have already regarded Yu Xiaojiu as a good friend in their hearts at this time. They agreed that although Jiulang usually has a serious face and a cold and normal face, he is actually cold-hearted and warm-hearted, and sincerely cares about his friends.

[System: It feels really subtle that your host has been issued a good person card.I always feel that his stupid and cute vest will fall off at any time. 】

So today I invited good friends to my home to be a guest to achieve get√.The owner, Yu Jiu, said that he was very happy to have found another way to make money and earn charm points. The items in the shopping cart can finally be cleared (exchanged).And the three little ones of the guests - two received a super magical self-luminous lamp from a classmate, and a good friend said that they were very happy and wanted to find someone to show off. They didn't know anything about the lamp until they returned home. The other child who only realized what he had missed also expressed satisfaction at the moment after reading the second part of the legendary story.

When they got home, the three of them who felt that they had obtained magical things all sold Amway (to show off) by coincidence. In addition to strongly recommending it to Aye Niang, the sons and daughters of their seven aunts and eight aunts did not let it go.It didn't take long for people to know that the child prodigy of the Yu family had "shown his power" again, this time by inventing a lighting lamp that can emit light naturally.A small lamp can illuminate a radius of ten miles without being extinguished.

Therefore, the new gadget that the Yu family has not yet sold - the rabbit lamp has quickly become popular among the aristocratic royal family (the great-grandson Li Yue of Zheng Wang Yuanyi leads the trend) and the common people (recommended by the student Si Kongshu) .Because of the "endorsement" of three people in the government school, Wu Xuezi has already tasted the charm of the rabbit lamp, and his heart to buy the same model is getting more and more restless, but he can only bite the small handkerchief and envy his eyes.

Not long after, the rabbit lamps sold in the commercial store were warmly welcomed by the people who had been waiting for a long time, and they were all sold out.The hardest ones are the students.The largest order came from the imperial palace. More and more rabbit lamps lit up the windows of thousands of houses. Luoyang, the eastern capital, seemed to be gradually becoming a "city that never sleeps."

The person in charge of Yu's Commercial Firm: It really saved a lot of publicity fees.Sure enough, Mr. Xiaolang is brilliant!This trick kills two birds with one stone!Not only made friends with the royal family, but also greatly publicized the things of the business.

Yu Xiaojiu (confused and cute face): What are you talking about?

Yu Yuan patted Brother's head, kissed his pink lips, and smiled, "It's okay."

[System: Thanks to the invention of the Rabbit Lamp to benefit all people, you have obtained [-] charm points, and congratulations to the host for unlocking the second floor of the system mall. 】

[System: By the way, why is it called a rabbit lamp? 】

Yu Xiaojiu: Probably because... well, I was bored and drew a little rabbit on the desk lamp?

People: ...

Some people are wise and careless, and some people are as wise as fools.Obviously, Yu Jiulang is the latter.