I am engaged in construction in Datang

Chapter 230 Don't Be Anxious

The afternoon itinerary was planned, and everyone didn’t want to delay, so they quickly finished lunch and headed towards the back mountain.

Nuzhuang is located near mountains and rivers. With its development, more and more land is allocated to the village, and the surrounding hills basically belong to the village.

Those core technology factories are all hidden in the mountains, with a large number of officers and soldiers hiding around them, and few people can enter and exit freely.

"Brother, the light bulb is not bright enough, and the light is yellow, which makes people feel uncomfortable."

In modern times, Li Yin has hardly ever seen the old-fashioned yellow light bulbs. They are all super bright incandescent bulbs.

"Brighter than a candle?"

At present, candles are still used for lighting in the palace, and several candles must be lit each time so that people can read and write.

“The light bulb, of course.”

Li Yin said: "This is not a concept."

It's hard to explain. A light bulb is different from a mirror. When Li Yin said it was a glass mirror, Li Shimin would have the concept of a bronze mirror in his mind.

The top-notch bronze mirrors are not much worse than glass mirrors, except for a slight lack of color difference.

But when Li Yin mentioned the light bulb, what came to Li Shimin's mind was still a candle, and at most a biogas lamp.

With anticipation in their hearts, everyone walked quickly and soon arrived at the place where the master chefs worked all day.

Wang Dahai and his group hang out here every day. They are all experienced craftsmen whose skills are comparable to Wang Dahai's.

"Engineer Wang, I always feel that the conversion rate is not high enough and it consumes too much coal."

Hearing this, Wang Dahai frowned and thought.

The conversion efficiency of the steam engine has always been a headache for them, but mechanical work will inevitably cause losses, so they can only try their best to reduce them.

Essentially, the heat energy released by burning coal actually offsets the frictional resistance that needs to be overcome to do work.

Coal of the same quality contains almost the same amount of heat energy, and reducing resistance will definitely extend the working time.

"You can use the principle of mechanical roller skating to reduce the force, but it will take some distance."

Li Yin came over with Li Shimin and others, and she began to give suggestions to Wang Dahai and others.

"Master?"

Wang Dahai saw Li Yin and others coming, and greeted Li Shimin and others one by one.

"We have thought about this, but nowadays there is not enough rubber, so it is difficult to make tracks."

"indeed."

Li Yin nodded: "Then we can only start with the sealing and increase the pressure in the steam engine."

“But sealing materials are hard to find.”

Li Shimin and others stood aside with bewildered expressions on their faces.

Many of the words were new to them and they felt they were very impressive.

Moreover, these things are too difficult to explain, and it is impossible for them to study them in depth.

Thinking about this, Li Yin's eyes lit up: "Engineer Wang, we have overlooked an important factor."

"Why do you only think about upgrading the equipment?"

"If we can use coal more fully, we can also save a lot."

"Yes!" Wang Dahai slapped his head and said, "Increasing the contact area between coal and oxygen will make full use of the heat energy. Doesn't this increase the working time?"

Li Shimin and others looked at Wang Dahai and others, then looked at Li Yin, and they just wanted to raise their hands and shout "six six six".

After the discussion of this matter, Wang Dahai led everyone into a side room.

It was a bit empty inside, with only a large table and a few chairs, and the table was covered with various mechanical drawings.

Xiao Yu stretched his head out and took a look, but couldn't understand anything.

There were so many densely packed lines of various colors, even of different thicknesses, that it gave him a headache.

Wang Dahai walked forward, put away the drawings, and took out clean paper and spread it on the table.

"Brother, look at the rope here."

Li Yin pointed to a large pull rope at the door and said, "Please pull it down gently with your hand."

Li Shimin knew that this was related to the light bulb, so he gently touched the pull rope, then turned his head and looked at Li Yin with burning eyes.

"..." Li Yin moved her lips.

"Brother, you have to pull it gently, don't just touch it."

"cough."

Li Shimin pretended to cough, pinched the area with his fingers again, and then turned his head to look at Li Yin.

Li Yin continued: "Pull it down with a little more force."

The other party added a little more strength.

"Push harder."

Li Shimin pulled again.

"..." Li Yin had no choice but to speak again: "Use more strength."

After doing this several times, there was a "click" sound.

Li Shimin stopped pulling his hands down and sweat began to appear on his forehead.

"Yes, right now."

Li Yin said excitedly: "Brother, let go."

Suddenly, the originally dim room was filled with yellow light.

"Haha!"

Xiao Yu was startled and quickly retracted his claws that were groping around.

Fang Xuanling and others were horrified and began to look for a light source. Finally, they saw a fist-sized light bulb above their heads.

"this……!"

"Is this a light bulb?" Changsun Wuji shouted at the top of his lungs.

"It doesn't look like fire." Fang Xuanling continued.

"Hey! Hey..."

What a bright light!

Everyone was so excited that they could see the words clearly at night with this light bulb!

"Everyone!"

Li Yin was full of enthusiasm: "Don't worry, everyone, we will definitely be able to install light bulbs in your offices this year!"

Suddenly, the old men seemed to be poured with a basin of cold water and became completely quiet.

"Ahem, Master Li."

Wei Zheng glanced around: "Actually, there's no need to be too anxious."

"I heard that Paradise on Earth will open this year, so why not go there first?"

Li Yin knew what this meant as soon as she heard it, and immediately said, "How can this be possible?"

"Entertainment is far inferior to business."

After that, she turned to Li Shimin and said, "Of course, my brother's mansion must be the first to be installed."

"It will be much more convenient for you to study late into the night in the future."

"..."

Li Shimin silently reached out his hand and pulled the light cord, and the room suddenly returned to its previous dim state.

He looked at his sister's sparkling eyes and felt tired for a moment...

……

Yuan Tingran had been in the Shangshu Province for four or five days. Although he still had no important work to do, he did not leave any evidence behind.

Madam Youfu helped Master Li to convey a message to her, telling her to do her best and leave the rest to fate, and that she had already done a great job.

Today she wore a dark blue dress, which was more solemn than before and similar in style to what Manor Master Li often wore.

The skirt has a shawl and wide sleeves, which is not very convenient to make.

When I walked into the lobby, Tang Jian was already seated.

This morning I had egg soup with some cold dishes at home.

"Mao Yue?" Yuan was surprised. Didn't the old man go to warm up his voice today?

"Madam!" Tang Jian's eyes lit up when he saw Yuanshi, but then he frowned at her outfit.

"Madam...I think I've seen this dress of yours somewhere before."

Yuan sat down and glanced at him: "He looks a bit like Master Li."

"Correct!"

Tang Jian nodded: "But the color is too dark, it doesn't look good."

"Yes, I understand." Yuan Shi picked up the food and drank the soup without changing her expression: "Mao Yue's clothes look good today."

"Like a peacock in April."

"..." Tang Jian stopped talking in time.

"Madam, I haven't seen you recently. Is the factory run by Her Majesty the Queen so busy?"

As soon as he finished speaking, Yuan Tingran looked at Tang Jian with strange eyes.

"Ah Lang, do you know my name?"