When he arrived at the inn, Abu came down first and paid the cost of renting the ox cart and Alimu's tip. When Yun Niang got out of the car with Wu Yebu in her arms, she still smudged her cheeks and smiled at the corners of her lips, with a lazy and chic style.

Alimu said that he would go back to eat first, and after eating, he would come and wait, and Abu didn't know how long Wu Ye would sleep this night, so he told him that he didn't need to, and they were going to go out tomorrow. Alimu helped deliver the snacks and rice packages he bought for Wu Ye into the room, and then he was ready to leave. Seeing that there were a lot of snacks to buy, Abu called Alimu and selected a few for his younger siblings to take back and taste. Although he didn't eat much, Abu's move still made the young man who had experienced hardships since he was a child feel grateful, and this time he really met a good person.

After sending Alimu away, Yun Niang also placed Wu Ye. She walked over first to help Abu take off her robe, and then she cleaned up her coat with a natural expression. After the experience in the ox cart just now, the relationship between the two took another step, and a feeling called happiness enveloped the two of them.

After washing, I still asked the store to bring the food to the room, and asked for some wine from yesterday, and the two began to eat. As for Wu Ye, his mouth has never stopped, and as for whether he will be hungry after waking up, he will talk about it when the time comes. Then Abu began to explain the goods purchased today to Yun Niang.

Judging from the molten shell or gas mark of that stone, it should be a meteorite; In addition, judging by its weight and color, the iron content in it should not be low. Meteorites are originally small stars or star fragments outside, and when they pass through the atmosphere, some impurities will be directly melted or burned off, so what can be left behind is generally a good smelting material.

Ordinary iron ore will contain various impurities, so the quality of the smelted iron ingots is not good, and it is difficult to adapt to high-intensity applications. The reason why the various weapons and horse harnesses produced in Gumo Prefecture are famous is not only the long tradition of blacksmiths, but also the relatively small iron ore impurities there.

Seeing that Yun Niang was a little puzzled, knowing that there was still a lot of knowledge that needed to be popularized in the future, so she continued to explain to her: "You look like there is nothing around you?" ”

Yun Niang nodded yes.

"Actually, we were surrounded by gas. Each substance will present a different state at different temperatures, including gases, liquids, and solids. The most common is water, water at room temperature is liquid, rivers, lakes and seas and rainwater are all, when heated and boiling, the water will come out of the hot gas, and it will become gas; In winter, when the temperature drops, ice, snow, frost, etc. are solid water, but the way it is generated is different. And we are surrounded by gases, mainly composed of oxygen and nitrogen. ”

Yun Niang said: "I understand, I heard others say that when smelting metal, the ore is usually heated and melted into molten iron, and then shaped into different shapes. Iron and copper also become liquid when heated, right? ”

"Clever, that's true."

Yun Niang happily, took a bite of the dish and rewarded herself.

"Let's move on to the meteorite." Abu put his hands together and rubbed them a few times, "You see that after the two hands rub like this, you will feel that your hands are hot." In the same way, as long as there are two objects, no matter what form it takes, it will generate heat. Therefore, after the extraterrestrial stars or debris fall into the atmosphere, because of the extremely high speed, it will rub against the air, generating a lot of heat, and a lot of impurities in it will be burned off. As the stall owner who found the meteorite said, there will be a long tail left in the air, which is when the meteorite is burning.

The meteorite left behind when it falls to the ground is equivalent to going through a process to remove impurities, and the remaining part is processed to obtain a very pure metal, and there may be some other rare metals in it. You should have no problem crafting some good quality swords or other items.

According to the stall owner's description, what can be seen on the top of the pit is as thick as two people hugging each other, and it should not be small below, and it is difficult to see such a large meteorite. Because many times, meteorites burn up directly when they don't fall to the ground. ”

"Didn't you pick up a big baby?"

"This ...... How to put it, some things, for some people, may not be of much use; But in the hands of others, it may play a big role. That's the best use of it, haha."

"But you want so much ore, where are you going to smelt it? I can see that what you say about a friend of yours is a lie. ”

"Wow, awesome, awesome, you can see it."

"Of course, you usually scratch your head unconsciously when you don't mean it."

"......" Abu was speechless, and said in his heart that you had found out. You really can't underestimate Yun Niang and the current people, if you are not careful, you will show your feet, "Don't worry, there is indeed a place to smelt metal, you will know when the time comes." ”

"I see you're haggling in a serious way there, and the people around you are talking to you. I don't usually see you, but in fact, you still have the potential to be a profiteer, hehe. Yun Niang teased Abu.

"Haha, but I've heard someone compliment a certain little lady for her beauty." Abu began to fight back.

"That's right, natural beauty." Now Yun Niang has also learned to be cheeky, "What is that rice?" ”

Speaking of this, Abu laughed hehehe, saying that this is called corn, which should mean rice grains like jade. According to later records, it would be hundreds of years before the crop was seen.

The world we live in is called the Earth, which is like a sphere, surrounded by an atmosphere, and the surface is completely covered by seawater, with seven continents floating on it. These continents are said to have been connected in the past, but later split apart by volcanic eruptions. And the travel between the continents can only be reached by sailing by large ships.

According to later written records, the technology for building large ships should not have existed by now; In addition, without a wealth of nautical knowledge, it is simply unimaginable to cross the vast sea.

According to what the man said, it is very likely that the people who came across the sea have been to the continent called the Americas, which is really hard to imagine.

But the world is so big that there are no surprises, and perhaps somewhere, there has been an advanced civilization that has not been annihilated.

Abu explained that corn is a good crop, perhaps because of its thicker and taller rhizomes, corn is more resistant to natural disasters, and its yield is generally higher. In addition, after harvesting, corn stalks and corn cobs are good combustibles, which are good for cooking and heating, and they are all treasures.

Yun Niang asked how much higher the yield could be, and Abu said, for example, if the wheat is 800 catties per mu of wheat, the corn can reach 1,000 catties per mu, an extra 200 catties, which is a great output for the people.

Yun Niang said how could there be so many, as far as she knew, the current yield per mu was only two or three hundred catties. Abu said that in later generations, it was normal to produce 1,000 catties per mu, and the highest record could reach 2,000 catties.

Yun Niang couldn't stop talking after hearing this, and couldn't help but show fascination, no wonder you didn't have to worry about hunger at that time, the high yield of food was terrifying.

Abu explained that it was not like that, because of the large population, the uneven distribution of wealth, and the turmoil and wars caused by some people with ulterior motives, there were also many people who died tragically, even more cruelly than in the current era. Therefore, food production is not the fundamental criterion for determining people's happiness.

After lunch, let Dr. Dian clean up, the two went back to their rooms to rest, and near evening, Wu Ye, who had slept enough, woke up.