Wu Qing was speechless for a while, how could he talk a little similar to the Xinjiang people in later generations, and smiled at the moment: "Oh, my friend, I need a cow that can produce milk." ”

"A chick who can produce milk? Oh, children of the Tang Dynasty, you should find your mother to breastfeed, I don't have a girl here. The people of the Western Regions said seriously.

Wu Qing was completely speechless, scolded a few words in his heart, and knew that there was a problem with communicating with this Western Regions person, so he pointed to the three Western Regions cows behind him and asked, "Can these three cows produce milk?" ”

The people of the Western Regions were stunned for a moment, and immediately showed their white teeth, and said, "Oh, my little friend of the Tang Dynasty, these cows can produce milk." ”

Wu Qing didn't speak, he walked directly behind the cow and looked at it, and said angrily: "Oh, my friend of Nima, you actually said that the bull can produce milk, are you bullying me for being young?" ”

The black and red faces of the people in the Western Regions looked a little embarrassed, but they couldn't argue, it seemed that the children of the Tang Dynasty were also very good, so they got up and patted their chests with one hand, bowed down and apologized: "Oh, I'm sorry my friend, the thinnest one is a cow, it's just nutritional, and it can't produce milk for the time being." ”

Wu Qing was stunned for a moment, but he didn't expect this Western Regions person to tell the cow that couldn't produce milk, and the merchants of this period didn't seem to be as powerful as those profiteers in later generations, so he said angrily: "You dare to pull out the cow that doesn't produce milk and sell it, aren't you afraid that someone will report to the official?" ”

"Oh, my friend, I'm going to sell it as a farming cow!" The people of the Western Regions hurriedly argued.

In the Tang Dynasty, especially in the early Tang Dynasty, during the reign of Emperor Taizong, Wuqing knew very well that in order to encourage farming, the imperial court strictly forbade the slaughter of ploughing cattle. If you kill a cow, you will be sentenced. However, in the era of Gaozong and Wu Zetian, it was not so strict.

Wu Qing smiled in his heart, if it is a ploughing cow, then the price will be cheap, if this guy can't sell it anymore, if he dies, maybe he will have to eat a lawsuit, it seems that this guy is in a hurry, no wonder he is depressed. In a year of famine like this, who would dare to buy another cow to go back?

"My friend, how much are you going to sell this cow for?"

"Oh, my Tang Dynasty friend, I'm going to sell twenty guan."

Wu Qing shook his head, twenty taels of silver is twenty taels of silver, that is, twenty thousand dollars, twenty taels of silver is enough for a family of five to live very richly for a year. Wu Qing turned around and left, his eyes deliberately looking around, wanting to see the others.

"My Tang Dynasty friend, the price is negotiable!" The people of the Western Regions hurriedly shouted.

Wu Qing stopped and said, "My friend, you are dishonest and are bullying me as a child. ”

"Oh, my little friend from the Tang Dynasty, so be it, Fifteen Guan."

Wu Qing didn't look back and took a step directly.

"Ten times!"

Wu Qing stopped and said in a childish voice: "Wuguan, my last bid!" ”

Wu Qing continued to walk forward, and suddenly a very lost voice came from behind him, "Deal!" ”

Wu Qing turned around, smiled all over his face, and said, "Happy cooperation!" ”

The people of the Western Regions said bitterly: "I understand, the children of the Tang Dynasty are also ghosts. ”

Wu Qing smiled and said with a smile: "If I can, I still want to buy one." ”

The people of the Western Regions were stunned for a moment, then smiled and said, "There are two left, twelve runs, a total of seventeen runs!" ”

Wu Qing knew that it was not easy for this person from the Western Regions, and knew that this trip was estimated to be a loss, so he agreed and asked him to take the cattle to his home.

When the three cows were brought into the house, Aunt Wu was stunned, and took out seventeen yuan and gave it to the merchants of the Western Regions. In the past three years, Aunt Wu has also understood that her baby is very assertive, and she says that the children of poor families are in charge early, which is not false at all.

Mother and son led the three cows into an abandoned stable, and then sat down.

Looking at Aunt Wu's inquiring gaze, Wu Qing said: "Mother, although our family has a bit of a family background, we can't sit and eat empty." ”

Aunt Wu nodded in agreement.

Wu Qing continued: "I know that my mother has suffered a lot of grievances over the years, so I bought a cow that can produce milk, which is enough for our mother and son." With the remaining two cows, I want to get an ox cart, and as for the other one, I want to slaughter it, because our family hasn't eaten meat for a long time. ”

Hearing the slaughter of cattle, Aunt Wu hurriedly said: "I promised in the front, but in the back, slaughtering cattle is illegal, in case it is discovered by the government, our family will be punished." ”

Wu Qing thought about it, but he still forgot it, so he promised Aunt Wu not to slaughter it, so as not to be imprisoned. In fact, in these years, the landlords of the Shi clan still eat beef, but no one has reported it.

Next, the mother and son discussed the purchase of forage, as well as the matter of settling down, the settlement of the county seat is relatively simple, not to mention that Wuqing is also a local, so they only need to go to Lizheng to say it. The mother and son mostly discussed Wu Qing's studies. After planning them one by one, Wu Qing asked, "Mother, do we have saltpeter in this place?" ”

Knowing that his mother didn't figure it out, Wu Qing asked again, "Is there nitrate?" ”

Aunt Wu still doesn't know, Wu Qing will give up, maybe this era is not called saltpeter, and there is no such thing as nitrate. But alchemy seems to use a lot of saltpeter, the current Tang Emperor advocates Taoism, Taizong has often taken Jindan, and the entire Tang Dynasty alchemy began to flourish. Saltpeter must be stored, so you can only go to the pharmacy to find it, and if you don't have it, you can think of a way to do it yourself.

Without a thousand years of thought, coupled with a little historical knowledge, Wu Qingzhen does not know how to survive in this era of the jungle. Fortunately, although he doesn't know much, there are so many things after all, if they can be promoted in this era, then he and Aunt Wu's small life will definitely be better, and he doesn't care about the low status of any businessman!

There is hawthorn in Jincheng County, Taiyuan Prefecture, Wu Qing has been thinking about making rock sugar gourds for a long time, he knows that the appearance of rock sugar gourds was in the Song Dynasty, and this era is gone. For this child's favorite, he is still very confident in opening the market of Datang. It's just that it's not the season for the hawthorn harvest yet.

Only when you think of shaved ice and popsicles, these two industrial ages, have things. It's just that the refrigeration problem is difficult for Wuqing. Although he knows very well that the refrigeration of refrigeration equipment is realized by the principle of throttling and expansion of freon, it is impossible to let him go to freon in this era. Fortunately, he studied chemical engineering, and his major has not been left behind, and after some thought, he can only think of a way by using endothermic reaction.

As for what kind of substance can absorb heat in a very simple situation, in the end, he contacted the reality, and thought of saltpeter, which is to absorb a lot of heat when put into water, and after stirring quickly, it will finally lead to freezing. Although saltpeter ice smells a little, if you add honey or sugar water, it should not have much odor. Moreover, saltpeter is also a traditional Chinese medicine, which can treat dizziness and is non-toxic and harmless. Of course, Wu Qing doesn't know how to use any toilet soil to refine nitrate, and the smell is really unsmellable, let alone eaten.

It's dog days, and he's confident that popsicles and shaved ice will sell. Of course, if he could, he would like to get a soda or a beer or something, but unfortunately that is not realistic. In order to be able to make money, he has other methods.

Saltpeter was used for alchemy and traditional Chinese medicine in this era, and Wuqing also knew that Wenshui was the Wenshui County of Shanxi in later generations, and Shanxi was rich in saltpeter, so he was not afraid that he could not buy it in the pharmacy.

In this era, cotton cloth is called white folded cloth, which came from the Western Regions, and the price is relatively expensive, and there is no market in the Tang Dynasty, where silk and satin are popular. It's not hard to buy, though. Wu Qing remembered that when he was a child, he followed his uncle to sell popsicles, pushing a bicycle, and there was a tightly wrapped box on it, which was a kind of incubator, and there were popsicles in it. When you open the lid, there is a lot of white mist, so you have to cover it quickly. Later, Wu Qing knew that it was for heat preservation.

With memory, Wu Qing drew this box on paper and instructed Aunt Wu to pay attention to some things when she asked the craftsman to do it tomorrow. Then I asked about the purchase of white cloth and saltpeter.

Aunt Wu didn't know what her son was going to do, but she still agreed as she said, fortunately, knowing that her son had the title of "prodigy", she didn't think much about it.