When the children who came back from overseas were all gathered, Er Ya knew that the steam engine had been successfully tinkered with by them.

Because of this confidential thing, they didn't make a public announcement to others, just waiting for Erya to come back.

"Is it really because the iron is not pure enough?"

"It's true that iron didn't work before! It's just that the re-refining of this iron is very expensive! Lady of the Owner, are you really going to make this useless thing? Li Chang has always thought that this thing is not practical, and he is very opposed to them fiddling with this thing with money and effort. Therefore, everyone else is busy with the precision of calculating the number jù, correcting the mistakes in various places, remaking the molds, etc., and only he is busy inventing other gadgets.

The success of the steam engine without his own psychological preparation made Erya very excited. She still thought that where the original world steam engine was invented, and in this world, it still had to be discovered there! So she had to ask the children to bring the materials to someone there to help them study. I didn't expect that my children are still very powerful, and the emergence of this steam engine will have a leap forward in the improvement of social productivity. She didn't bother with Li Chang too much, but said, "Who said it wasn't useful? Its usefulness has become greater, it is a big ladder from a backward society to a advanced society, you know? ”

Zhang Motan and Li Jinong's eyes widened: "Really? ”

"Of course it's true! Let's discuss, who will lead the team to send this to the Nanhai Shipyard first! They don't need to change the original structure of the ship we custom-made, just add the original manual rotation of the propeller and a rotating table propelled by this steam engine. It would be better to send two men who knew how to use the steam engine to help the shipyard technicians design such a mechanical propeller mechanism. ”

Liu Jian and Fan Yunzhong raised their hands at the same time, "I'll go!" "I'll go!"

Er Yayi waved his hand, "I don't know what you each have to do, but you know it yourself." Therefore you will consult with yourselves, and I will not make any foolish arrangements. After speaking, he asked Li Chang, who was ashamed, "Li Chang!" They all said that you made a lot of small inventions that are very good, you can take them out and I will take a look. Maybe it's really useful, you don't even know it. ”

After listening to the words of the owner's lady, Li Chang looked up in surprise and said, "Okay!" "I ran back to my dorm. Put all his small inventions into a wooden box and move them to Erya.

Erya looked through them one by one and saw something very similar to a clock, she endured the excitement in her heart and asked Li Chang: "This disc has a pointer." What did you intend to do? ”

Li Chang looked at the things in the hands of the lady of the owner, scratched the back of his head, and replied with an embarrassed smile: "I originally wanted to make a pointer that can follow the sun's rays according to the principle of the music box." In this way, even on a rainy day, you can know the time. But after I did this, I realized that it was too far from the correct time. It didn't work at all, and then I gave up. ”

As soon as Erya heard that Li Chang was going to discard such a good invention, she spoke much faster in a hurry: "Ahhh Your idea is right, but you can't copy it completely, and you need to improve it. Come on, come on. Let me tell you how this clock should be done in the best way. This time disc cannot be positioned according to the sunshine pointer. Divide an hour into two hours, and each hour into sixty minutes, and each minute into sixty seconds.

This needs a gear to drive the second, the gear may need external teeth and internal teeth, and the minute drive also needs a gear, which may also need external teeth and internal teeth, and the one that drives the hour hand also needs a gear, and I am afraid that it is also necessary for both external and internal teeth. These gears also have to be interlocked, and when the second gear is turning, it also drives the minute gear to rotate. When the minute gear turns, the clock gear should be driven to rotate. One rotation of the clock's gears is exactly one day and one night, that is, twelve hours, which are divided into twenty-four hours. If you follow this thinking, you will definitely succeed. ”

Everyone was pleasantly surprised by the words of the lady of the owner, which made them feel that Li Chang was really not far from success.

Erya didn't care about Li Chang, who was overly surprised. Continuing to rummage through his wooden box, he took out a small speaker, looked at it over and over, and said, "Is this a megaphone or a stereo speaker?" ”

Li Chang didn't understand, but he still explained: "I changed the kind of horn we usually use, and now it sounds much better." It's not as draconic as the original. ”

People's ** is really tempted and tempted step by step, at this moment, Er Ya looked at this improved horn, and wanted a horn with a magnet. Thinking of the magnet speaker, she thought that if there was a dry battery, it would be good to pull the wire to the villages that were related, and then get a magnet horn to hang on the tree in the village, and if there is anything, shout on the microphone in the town, and the villages below can hear it, what an advanced way to convey information!

The magnet horn is easy to get, but how can this dry battery be obtained? There seem to be carbon rods, zinc flakes, and electrolytes, which seem to belong to chemical properties, and should be told to Wang Zhujie, who is more focused on chemistry, maybe he can really get it out!

"Zhu Jie! I heard that your chemistry is good, I saw something here, and I don't know if you can help make it. ”

Wang Zhujie was a little surprised, and hurriedly asked, "What kind of things does the lady of the proprietor want?" Tell me, I can figure it out slowly! ”

Erya thought for a while, but still said: "In the middle, it seems to be a carbon rod and graphite rod made of graphite and carbon, and the outside seems to be a metal sheet made of metal zinc, and there is a slimy white transparent liquid in the middle. It's just that I don't know what this liquid is, but you should know it if you've studied chemistry. ”

"Where did the proprietor see this? If it's still there, can you show it to me? I might be able to figure out how to do it by looking at things! ”

"I should have seen it in the things that foreigners left in my house at the beginning, but now I'm afraid it's gone!"

What the foreigner saw! A few people were frowning and wondering, what could it be? Have they seen it, or even used it?

Wang Zhujie couldn't think of it, and asked again: "Then how does the lady of the proprietor know that it is related to chemistry?" ”

"Because at first it was fine, but then it softened, and the slimy thing was going to come out. Isn't that what you often call a chemical reaction? ”

"That's just as well! Well, it would be nice to see something, but don't worry, ladies of the owner, I'll be thinking about what you're talking about from tomorrow. ”

Erya nodded without any weakness, "Hmm! The rest of you can also think about what it is together and study it together. There is a lot of power in numbers! Ay! By the way, I almost forgot to tell you guys, you guys have been busy for so long that I think the bike can be officially produced. ”

Although everyone has a feeling in their hearts that they should be able to pass guò this time, but when they hear the lady of the owner say it, they will still jump excitedly, you hug me and I will hug you. Li Jinong cried before he could speak! The eldest of these children is only twenty-one or twelve years old, and he is Yan Sù's husband in the eyes of others, but in the eyes of Erya, he is a child. She looked at Li Jinong who was crying funny, and other children hugged Li Jinong, wiping their tears with other people's clothes.

"Oops! Why can't I read you? You don't feel that the steam engine is such a big achievement, why is this non-technical content so exciting for you? wiped away their tears, and went to call the two masters of the car shop and the two brothers of the Jiang family, the director of the iron shop, as well, and we discussed a charter first, and then held a high-level meeting in a few days to finalize it. ”

"Good!"

The boys seemed to be a little embarrassed, and they all scattered in a hurry, rushing out to find someone, leaving no one behind. Erya shook her head with a smile and began to look through Li Chang's treasure chest again.

They didn't have much time to discuss it, because many issues were just raised, and whether it was reasonable or unreasonable was not to be determined at the time.

When Erya came back, it was actually early. The eldest aunt and the second aunt who didn't go to the town much again were still at her house, chatting and waiting for her to come back.

When the second girl sat down, Sister-in-law Ding took Xiao Wenfan away and asked them to talk well. The eldest aunt is very eager to know the situation of Daman's youngest son, which is a little grandson who makes her feel unexpected, so she pays more attention than other grandchildren: "How much was Daman's youngest son born?" What does it look like? Can it be strong? ”

Er Ya replied with a smile: "Four catties is almost five catties (this is sixteen taels for one catty), grow strong!" When I beat my little lazy man, I was very energetic. ”

When the eldest aunt heard that the little lazy man was beaten, she was distressed: "Why don't you stop it?" ”

"It's okay! My little lazy person is not afraid of pain! You're all right at home! ”

The second aunt smiled: "We're fine!" It's because Xiaohu was injured that you haven't come back for so long, and you're a little worried. ”

Only then did the eldest aunt remember that she should have expressed more concern about the injured little tiger, so she hurriedly asked, "Yes!" How could Xiaohu get hurt? Are the people of Western Xinjiang coming to rob again? ”

"It has nothing to do with the people of Western Xinjiang, it was when he went to the capital that he encountered some things, but they have all passed."

"Hey! That's good! That's good! You just send a message and say it's all right. But if you don't come back, your uncle is worried about dying at home, and he can't sleep well at night. If it weren't for the fact that I heard that you went to Daman's house to see the children, your uncle would have chased after you. ”

"Hey! We are waiting for the Qingzhu and Wenchao exams! Otherwise, I wouldn't have stayed that long. ”

Xiaohu has come back well, and everyone is relieved. The family had already received a letter that Qingzhu and Wen Chao had already obtained the Zhongjinshi, but why didn't they stay in the capital and wait for the officials, but came back with them? The eldest aunt couldn't think of that, the second aunt used to walk around the town a lot, and she knew more, so she asked, "Didn't Qingzhu and Wenchao both get into the Jinshi!" Why didn't you stay in the capital? ”

"I'm waiting there, I'm waiting at home, it's better to come back and wait. Anyway, someone in our family is in the capital, and there really needs to be some official position for them to do, and the message is sent over there, and it will be too late for them to hurry over. Erya didn't say that she was reluctant to let her two children stay in the capital.

The eldest uncle sighed: "Qingzhu and Wenchao are also going to leave home, and your uncle will have to be sad for a while." (To be continued.) )