As early as the previous dynasties, after people produced gunpowder and mined large quantities of saltpeter, they were already artificially made ice, and in some prosperous cities, some merchants added sugar to ice to attract customers.

However, in Gray Yuan Town and even Danling County, Zhao Yuan has not seen anyone use saltpeter to make ice artificially, which may be related to the fact that the skills are only in the hands of a small number of merchants.

The main use of saltpeter in this era is still in medicine, and most pharmacies have this flavored medicine, and it is very easy to find a small amount of saltpeter.

"Really, uncle?" Luoluo asked expectantly.

"Of course, we talked about it before, we know how the ice came from, do you remember it?" In the house, Zhao Yuan asked the little girl with a fan made of palm leaves.

"You know, it's the temperature, as soon as the temperature drops to a certain point, the water will turn into ice." Luoluo said with a smile.

"Yes, we're going to find something that can absorb a lot of heat, so that the temperature of the water is low enough to freeze at the point where it freezes, and we can get ice."

"Madam, what are you talking about?" Yao Yuan's daughter-in-law on the side asked Meng Ying softly.

"I don't understand either, but they often say strange things, and Brother Yuan says it's science." Meng Ying said with a smile.

"Science?"

"My lord knows so much!"

…………

During this time, he has been busy with the affairs of the cement workshop, and he has not paid attention to Luoluo's studies for a long time, so he just took advantage of the fact that he was idle now, and Zhao Yuan checked Luoluo's homework by the way.

To say that in the year that Zhao Yuan has been in this era, the biggest change that has been influenced by him is probably Luoluo's little girl.

From a thin and weak little girl to a smart and clever little princess now, all this has only happened in just one year, and I have to say that Luoluo is a little prodigy.

Zhao Yuan took a look at Luoluo's homework during this time, and found that the little girl was worthy of being a little prodigy, although there was still a lot of knowledge in the textbooks she wrote, she didn't understand, but she already knew most of the words, especially in mathematics, very talented, and there was basically no problem with addition, subtraction, multiplication and division within a hundred.

"Uncle, I'm not lazy." Luoluo said proudly.

"Luoluo, you can't be proud, aren't there many more you can't understand?" Zhao Yuan said with a smile.

"Uncle, you teach me."

"Of course, but Luoluo, you also have to teach Xiaoya."

"Uncle, let's go to the fish pond and have a look, the bamboo pavilion on the other side of the fish pond is the coolest." Luoluo nodded and said to Zhao Yuan.

"Okay, then go to the bamboo pavilion."

Thanks to the release of fish feed, the fish in the fish pond have grown a lot during this time, especially after the first batch of earthworms come out and are added to the fish feed, the effect is even more obvious.

The bamboo pavilion on the fish pond, from the shore to the big stone in the middle of the fish pond, and then a bamboo pavilion built with bamboo on the stone, the bamboo pavilion was originally very irregular, and later the people of Zhulin Village helped Zhao Yuan to renovate the bamboo pavilion, and now the whole bamboo pavilion is very elegant and beautiful.

Standing on the bamboo pavilion, you can see the fish swimming leisurely in the fish pond, scattering fish food, and the fish compete for food, which looks very lively and lively.

With some snacks, everyone walked towards the fish pond, but Jia Yang's family and Yao Yuan and his wife said that they wanted to work, but they did not follow.

When they came to the bamboo pavilion, everyone sat down on the bamboo bench and chatted while looking at the surrounding scenery.

Although there are more things at home, there are also more people doing work, and Zhao Yuan, who has been busy for a few months, returned home and found that there was really not much to do by himself.

"Uncle, it's so nice that you're at home." In the bamboo pavilion, Luoluo said while playing with the little girl.

"What's good, don't you have your aunt and everyone with you." Zhao Yuan teased Luoluo.

"It's good to be with my aunt and everyone, but I miss you so much, uncle." Luoluo said coquettishly.

"Haha." Zhao Yuan couldn't help but laugh.

"That's what people call family fun." Shao Meng whispered on the side.

"I also have a younger sister, thirteen years younger than me, and I didn't think she was as cute as Miss when I was a child." Xu Xiang said.

"You don't look at who taught the young lady."

"What are you four talking about?" Zhao Yuan saw Shao Meng and the four of them talking, and shouted loudly.

"I didn't say anything, I just said that Miss was so cute." Guo Du hurriedly said.

"This also needs you to say, Guo Du, you go and prepare a few fishing rods, and we will eat fish tonight." Zhao Yuan said.

"Uncle, are we going fishing?" Luoluo asked.

"yes, fishing." Zhao Yuan said with a smile.

"But there are so few fish in the pond that they haven't grown up yet, so why don't we eat them?" Luoluo asked.

"These fish are not small anymore, and they look like the big ones are about two catties." Zhao Yuan wondered.

"Brother Yuan, in addition to feeding the chickens and donkeys, Luoluo's favorite thing to do every day is to feed the fish, and she is reluctant." Meng Ying said with a smile on the side.

"Is that so? But Luoluo, we raise fish to eat. Zhao Yuan said to Luoluo.

"It's not that they can't be eaten, they're still small, uncle, didn't you say that the fish in the fish pond will give birth to small fish, and there will be more fish in the future?" Luoluo asked.

"Okay, stop fishing, Shao Meng, don't go." Zhao Yuan said helplessly.

"Uncle is so nice, let's feed the fish." Luoluo pulled Zhao Yuan to the bamboo pavilion and pointed to a bag containing fish feed and said.

"Okay, let's feed the fish." Zhao Yuan smiled, picked up the fish food and threw it towards the fish pond.

"Uncle Shao Meng, you are not allowed to feed, you can't feed too much at a time, otherwise the fish will be strangled to death." Luoluo saw that Shao Meng and the others also grabbed fish food and put it in the fish pond, and stopped it.

"Okay, we don't feed." Shao Meng and the others laughed.

In the past four months, Zhao Yuan's family has also undergone a lot of changes.

First of all, the biscuit workshop has been moved to the market, which is the small courtyard when the employees of the small supermarket were trained, Tao Pu asked Zhao Yuan, he has bought the small courtyard, slightly transformed it as a warehouse, and the biscuit workshop has also moved there, which facilitates the production and transportation of biscuits, of course, the scale has expanded a little.

The second is that the family opened a processing workshop specializing in the production of feed, from the county to transport bean dregs, bones and coarse earthworm meal, the raw materials of the feed processing workshop are all together, every month according to the situation of raw materials, can make about 2,000 catties of feed.

With the help of Zhao Yuan, some other metals were added to the raw materials of the blacksmith shop, and the performance of the ironware was greatly improved.