After the meal, people went back to their places.

Li Yi took a pen to copy medical books and learned while copying.

Pei Yaoqing also sat at the desk, thinking about things, and taking notes from time to time.

Li Chengqi fiddled with the light bulb and the foot generator, and he found that the light bulb was not so bright when it was slow.

As he gradually increased and slowed down, the brightness of the bulb changed together, and when a lot of force was applied, the bulb remained a constant brightness.

"What is the rationale for this?" Li Chengqi wanted to figure out the principle between speed and brightness of the light bulb.

Then from the outside, the window of the room he was in flickered and flickered, which was a little scary.

In the room next to the courtyard where Li Longji was, someone was pedaling the bicycle pedals, and they were connected to the line into Li Longji's study.

The palace sent him the concert handed in today's political affairs hall, and Gao Lishi simply approved it, and sent it to Zhuangzi if he couldn't make up his mind.

Li Longji enjoyed the benefits of electric light, and the people in the next room needed to be rotated.

"Works better than candles." Li Longji found that the light hanging on his head in front of him did not shake, it was always so bright.

Queen Wang couldn't sleep, so she walked slowly around the house and chatted with Peach.

There was also a light bulb in her bedroom, framed in red gauze, and the light that came out was warm.

"Peach, what will happen if you say that the rich and noble will use this lamp?" The queen looked up, but avoided the light.

"There will be people who will be punished for kicking and kicking, and if they can't move and don't shine, they will be beaten." Pink saw the people kicking in the room outside.

Zhuangzi has cast iron gears and chains, and there is a chair to sit on, and the legs of the people who kick them are not fast.

If you change someone else's home, you are reluctant to use good iron to make gears, and you can't use the proprietor when you turn the gears.

Queen Wang was originally full of light, but when she heard Peach's words, she glanced at her: "Didn't you tell you to kick, people in the world are distressed?" ”

"Isn't it the same when you go to the palace?" Pink pout.

"Don't be afraid, look at what my uncle does, the windmill doesn't turn from time to time, he can't let the farmer pedal all day to generate electricity."

The queen looked like I was not in a hurry, waiting.

Zhuangzi gave a new way to take it back to the palace.

Right now...... Keep getting people pedaling.

"Tomorrow bring something back, send a set to the Hundred Blessing Palace, and the rest of the people ......" Queen Wang stopped.

"I heard that several people in the palace have complained." Pink reveals the news.

"San Lang is here, of course they won't do it, and they almost made Concubine Zhao Li's son Li Ying the crown prince, it's so dangerous."

Queen Wang was very unhappy when she said this.

There are too many women, all kinds of concubines, as well as Zhaoyi, Jieyu, and talents.

"Queen, you have to come to Zhuangzi every three or five times, only when you go to Zhuangzi, Your Majesty will not bring anyone else, unless you are sick and the doctor is not good."

Rosé gives the idea.

"Won't bring anyone else?" Queen Wang is not sure.

"The proprietor said that if the wife of the chaff does not go to court, His Majesty will bring other women, and the proprietor promises not to give a good face." Rosé spoke her analysis.

"Okay, good uncle." Queen Wang issued a card, as long as she could stabilize her position, she was a good person.

***

The good man Li Yi copied very carefully, and he would check every page he copied, but he didn't dare to make typos.

After writing for an hour, Li Yi stopped and copied these today.

He looked up at the light bulb, and the farmer had to come over to generate electricity artificially, but Li Yi didn't succeed in stopping it, so he let the farmer exercise there.

"Wind power and hydropower generation are not able to form a unit, and the current and voltage are unstable.

Hydropower is fine in a supersaturated state, but not everywhere there are rivers.

Lead is there, and it's very pure, and alum oil is there, yes, it's dilute sulfuric acid. ”

Li Yi thought of lead-acid batteries, which have long been available and have high purity.

Dilute sulfuric acid, you have to admire the alchemist, all kinds of things are refined, things are added, a chemical reaction, and it is taken out for people to eat, there are many metals.

"Let's celebrate the New Year, it's cold, there is a lot of work, and I can't be busy." Li Yi muttered and shouted outside: "Sleep." ”

"Proprietor, I'm going back." With a sound, the lights went out.

The next morning, all the people who had eaten left in an uproar.

Li Longji brought three sets of manpower generators and a large box of light bulbs, which were not used and did not have tungsten filament.

Li Chengqi brought five groups, saying that he was helping Yi Di to test, and Li Yi said I believe you...... of evil.

Pei Yaoqing has taken a set, he wants to engage in publicity, ask rich people to watch it first, and then do it himself.

Take a free light bulb from Li Yi's hand, and if you want to use the light bulb after the New Year, you have to pay for it.

With their departure, the skaters arrived, and it was most convenient for those who stayed in Zhangjia Village last night.

"Li Dongzhu, you make another appearance, the one who jumped up and circled, I think I can do it if I see it." Someone shouted at Li Yi.

"I can't." As soon as Li Yi heard jumping in circles, he always felt uncomfortable in his right ankle and firmly refused.

Turn around and go for a walk to digest food, and then go to give the students a half-day lesson.

As soon as Li Longji went back, he was entangled by three prime ministers.

This morning, the dynasty did not open again, and the things that all officials and departments needed to say were in Yao Chong's hands.

"What did Your Majesty bring back today?" Yao Chongyi didn't mention official business, so he asked curiously first.

"Uh......" Li Longji is in trouble, and he has brought less, so there should be a set in the political hall.

"Something similar to a candle, I will use it for you first, and then give it to the government hall." Li Longji made an excuse.

The three prime ministers looked at each other and felt so sad.

"Your Majesty, the matter of the Turkic marriage ......," Yao Chong said.

"No, in the future, anyone who wants to marry my Tang Dynasty will only be allowed to marry foreign daughters in the Tang Dynasty, not Tang women." Li Longji gave the answer.

"Why?" Yao Chong asked.

"The mountains are high and the road is far away, and it is very difficult to meet, so I am reluctant to let the princess suffer outside." Li Longji looks like I am a good father.

The three prime ministers look at each other again, can there be such a reason? Your Majesty, the princess you promised to someone else is not yours, is it?

Princess Wencheng in the early days was a distant relative.

Princess Jincheng, who is in Tibet, is the daughter of Li Shouli.

Are you reluctant to give up someone else's daughter? Oh, my God!

Li Longji didn't want to explain, so he said to the three people: "Those who are in the border markets with Tibet and Turkic, regardless of whether they are private markets or not, are not allowed to take out the Tang Dynasty utensils, and all craftsmen are not allowed to come out."

Good technology should stay in Datang, and when it is stopped, it will be stopped, and they will be asked to learn, won't they have money and food to come and beat us. ”

When the prime ministers heard this, they instantly understood why they didn't marry someone else, every time they married a princess, they had to bring craftsmen and skills.

"Your Ministers understand." Yao Chong agreed.

He is also cautious, and he feels uncomfortable giving out good things.

The queen on the other side went to the Baifu Hall and sent a set of things.

Three sets, one set is here for her, one is in the office of His Majesty, and the last set is for the emperor.

Others don't, even the very favored, good at singing and dancing, and pleasing Wu Jieyu can't use it.

As soon as Queen Wang arrived at the Baifu Hall with a large group of people, Concubine Doulu took her hand and asked her to sit down and speak.

"Queen, you can't walk too fast in the palace, you have to be careful." Concubine Doulu glanced at Queen Wang's stomach and said.

"I know, I'm in a hurry to deliver you good things today, and now they know about it, huh?"

Queen Wang asked about her pregnancy, and she couldn't hide it if she kept it a secret.

"I don't know if it's a man or a woman." Concubine Doulu told Queen Wang that others could only guess.

"I don't eat the food in the palace, and I don't drink any medicine, I'm not afraid." The queen said with a grin.

Doulu Guifei was a little relieved, and listened to what her man said, Zhuangzi's Li Yi medical skills were superb.

She knew that only when Queen Wang's position was stable could she feel at ease, and at the same time, Li Dan was also safe.

Concubine Doulu doesn't know history, but she can feel it.