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The New Year is actually very boring, but Chen Zhaoniang doesn't think so, taking advantage of the opportunity that her son has nowhere to go, she feasted the daughters of the important minister's family for four or five days in a row, the purpose is still the same, that is, she wants to choose a wife for Zheng Kezang who can be used as a help in the future from several powerful daughters. (If you like this book, please bookmark biquge.info)

Of course, Chen Zhaoniang did this because her identity made Zheng Kezhang suffer a lot, and Zheng Kezang, who knew his mother's intentions, naturally would not fail to cooperate in this matter, so Zheng Kezhang suffered these days, and he had to pretend to be a beautiful son in front of people every day.

"Qin She, come here to see the wife and son-in-law of Chief Envoy Chen." Finally one day, Zheng Kezhang saw Chen Xianqiao, a girl who died for him in the history of his previous life, Chen Xianqiao was only thirteen years old at this time, with a snow-white complexion with big eyes, and charming long braids, at first glance, she really felt a little kawaii.

Although it was not the first time they met, they couldn't keep their eyes on each other after all, so Zheng Kezhang bowed to Chen Yonghua's wife. As for the appearance of being a young man, Mrs. Chen has heard her husband talk about it a lot at home, so every time she looks at it, she is curious, and Zheng Kezhang is so burned that she can't stand or sit.

As if seeing her son's uneasiness, Chen Zhaoniang, who was smiling, talked softly with Mrs. Chen, and then ordered: "Qinshe, take your delicate sister to the garden, remember not to delay the time to come back for lunch." ”

Looking up at Zheng Kezang who was looking at the sun, would he be delayed by the thirteen-year-old Lori because of the in-depth communication? I really don't know what Chen Zhaoniang thinks, this obvious hint is all spoken, and the marriage between them is almost decided.

"No!" Zheng Kezhang responded and took the little Lori out of the yard, but when he came out, he was dumbfounded, speaking of which, he was not proficient in poetry singing and this so-called boudoir fun, as for the games played by young people in this era, how could he be old and pay attention.

But looking at Chen Miao, who was silent and followed behind him like a little daughter-in-law, Zheng Kezhang was a little weak, and finally he came up with an idea: "Slender girl, let's make a kite and fly it." ”

"Kite flying?" Chen Xianqiao thought about it with her head, and nodded lightly, the thirteen-year-old girl already knew many things, and naturally she didn't want to disobey this man who might become her husband in the future. "Okay, but Yu won't do it!"

"I'll leave it to Yu to make kites." Zheng Kezhang took a big bag, but when he saw the look in the girl's eyes, his heart moved. "But there's a job for you to do with the delicate girl." Chen Xianqiao looked at Zheng Kezhang with wide eyes, and Zheng Kezhang grinned. "Yu Ke doesn't know how to draw, Mr. Chen's family education is very strict, and the girl's popularity should be good, so how about bothering the sister-in-law to draw a picture in vain?"

Chen Xianqiao nodded hesitantly, but she didn't expect Zheng Kezhang to grab her hand, pull it up and run, she was startled for a while, and was about to shout, but her body had been driven by Zheng Kezang, so she had to stumble up.

The two quickly ran into Zheng Kezang's study: "Sister, you can rest for a while, and then let someone find you drawing paper." ”

Zheng Kezhang said as he started to clean up the pen and inkstone on the desk, but his words seemed to sink into the sea, and he didn't wait for Chen Xianqiao's response for a long time. Zheng Kezhang raised his head and looked over, only to see Chen Xianqiao sitting on the round stool with his lips pouting, rubbing his feet with one hand and covering his heart with the other, obviously not recovering from the run just now.

"What's the matter, I'm broken?" Zheng Kezhang walked over, looking at the girl's angry appearance, he suddenly had a little throbbing, of course he wouldn't do anything to the thirteen-year-old yellow-haired girl, he just wanted to play a prank, so he squatted down and poked into the girl's legs. "It doesn't hurt, let's rub it for you."

"Wow!" Chen Xianqiao saw that Zheng Kezang's hand was about to be put on his lap, and immediately cried out in a hurry. "You're a bully!"

"Crying is crying." Zheng Kezhang was still a little confused at first, but after thinking about it carefully, he remembered that the famous religion of this era can pay attention to whether men and women are intimate or not, if he really puts his hand on, it will not be a prank but a tease. "That's it, that's it, cry again, the rest of the water here will be flooded with gold." Saying that, Zheng Kezhang hurriedly gaged and begged for mercy. "Sister, good girl, just spare Yu this time."

"But, you grabbed the rest of your hand." The little girl looked like she was crying, but Zheng Kezang, who was hurriedly comforting her, inadvertently discovered the glint in her eyes after the success of the cunning. "If you let others spread the word, Yu, how can Yu go out and see people"

"What a cunning little hoof." Zheng Kezhang sighed secretly, but he still had to say it. "Whoever dares to chew his tongue, who dares, Yu will kill him!" The murderous words suddenly frightened Chen Xianqiao, so that the girl didn't know what to do next, and Zheng Kezang, who didn't want to be cold, immediately changed his appearance. "But I also grabbed my hand, I really want to spread it, otherwise, my sister will marry Yu." Zheng Kezhang took a compact step, almost touching the little girl's face. "There's no gossip now!"

"Ahh Chen Xianqiao was completely frightened, seeing her like this, Zheng Kezhang knew that he couldn't tease anymore, so he squeezed his eyes at him, which made Chen Xianqiao, who had come back to his senses, put his heart at ease, but this let go of her heart, and the little girl immediately became angry. "Humph! bullying people again, Dad is right, the eldest son is really not a good person. ”

"What, Mr. Chen said that Yu is not a good person, Yu doesn't believe it." Zheng Kezhang shook his head, seeing that the little girl was about to speak again, he hurriedly interrupted. "Don't say so much," Zheng Kezhang picked up the pen. "The ink will help you grind, Yu will go out to find a few bamboo pieces, and by the way, someone will send you the drawing paper, wait a minute, let's compare, who will finish their homework first."

"Compare to compare!" Chen Xianqiao wrinkled her nose unconvinced. "Yu doesn't believe it, you can make skeletons faster than Yu painting!"

I can't help but say that Chen Xianqiao's tutoring is good, and he looks like a dragonfly picture, which is far more successful than Zheng Kezang's half-hung craftsman, but looking at Zheng Kezang who was frowning and doing handiwork, Chen Xianqiao did not shout about his success, but watched and watched intently

As soon as the Shangyuan Festival passed, Zheng Kezhang rushed out of Anping City with fire - although the boy camp had not yet resumed at this time, several workshops in his hands had begun to resume work, and Zheng Kezang, who knew that the time left for him was getting shorter and shorter, really had no way not to seize the gap that he could use.

Zheng Kezang's first destination was a dry distillation kiln next to a cement kiln.

Zheng Kezhang vaguely remembered Du Niang's description of wood dry distillation as follows, that is, "the wood is placed in a dry distillation kiln and heated and decomposed under the condition of air isolation; The volatiles that cannot be condensed are wood gas, and the ones that can be condensed are wood tar and pyrowoodic acid; The remaining solid is charcoal. ”

But it was the words "air isolation" that made Zheng Kezhang suffer a lot, and in several tests, he either could not fully preheat, or because the furnace burst due to the excessive pressure of the closed container. After several failed lessons, Zheng Kezhang had to abandon the idea of being fully enclosed, and boldly tried to add a snorkel in the inner tank to draw out the hot gas, and then condensed it with water in the circuit, then diverted the wood tar, and finally fed the wood gas back into the combustion chamber.

"This time it seems to be done." Watching the fire turn blue and white in an instant through the observation window, Zheng Kezang's face showed a trace of late joy. "Stop, don't add any more firewood and grass." There was no fuel, but the fire was still burning, and Zheng Kezhang understood that it was wood gas that had been ignited. "Wait and watch the fire carefully."

Faced with such a strange scene and the craftsmen who were surprised, Zheng Kezhang didn't give any explanation, but just cared for it. Then he walked quickly to the condenser pipe, broke the mud seal on the clay pipe with his own hands, and a light black oil with the smell of smoke slowly flowed out of the pipe.

Zheng Kezhang hurriedly ordered someone to take a clay pot to fill it, and at the same time explained: "This thing is poisonous and can't be eaten, and you can't smell too much, so you should cover your mouth and nose when you take it, and remember to seal it with mud immediately when filling a jar, and don't let it volatilize." ”

"Eldest son, this thing is stinky and poisonous, what can it be used for?"

The craftsman surnamed Xu, who was guarding the condenser tube on the side, asked inexplicably, in his opinion, since it was a poison, why bother to refine it, could it be that Zheng Kezhang was going to use it to carry out witchcraft Gu or smear it on the arrow to kill the enemy?

"This thing can be used to prevent corrosion and decay of wood and bamboo, and it can also be used as a wolf smoke can after ignition." In fact, the real use of wood tar is to refine organic compounds with high hydrocarbons, acids and phenols, but Zheng Kezhang has no conditions and no ability to further further processing. "Okay, prepare more of this thing and send it to the Ministry of Industry, the Ministry of Industry will use it to dehydrate the bamboo tendons, by the way, remember to tell them to pay attention to protection after sending it."

Xu Jiangtou nodded, and then Zheng Kezhang returned to the stove: "It's all optimistic, if the furnace is extinguished and the tar over there does not flow out, it means that the wood in the kettle has been distilled into charcoal, but don't be in a hurry to open the furnace, simmer for another day or two." ”

"Don't worry, eldest prince, we have been burning charcoal for so many years, and this truth will always be known." The master craftsman in charge of mastering the heat was so assured, but he was not without doubts. "But the eldest prince, in addition to a little more stinky oil, dry distillation of such a furnace of charcoal can cost a lot of firewood than direct firing, isn't it a little worthwhile?"

"It's worth it!" Zheng Kezhang laughed, for these Ming Dynasty people who didn't know what chemistry was, Zheng Kezhang couldn't explain more, so he could only take an example to illustrate. "Next time I find some pine wood to dry distill, what comes out is turpentine, which is a good medicinal material, which can not only disinfect and antibacterial, but also repel insects and treat rheumatism and bone pain."

The master still thinks that disinfection is detoxification, as for what is antibacterial, he is even more confused, but he can understand the deworming and treatment of rheumatism, after all, in this era, because of the accommodation conditions, rheumatism is still a common stubborn disease among the lower class people.

"That's a great merit, but the eldest prince really can't see it if he doesn't say it, just this stinky thing can still be used in medicine, he is worthy of being the eldest son of the prince, and he knows a lot of things."

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