"Gross!" This is the third time that Madu has vomited today, but the contents of his stomach have been vomited clean, and there is nothing left, only two mouthfuls of sour water. I regret why I pretended to be a big head to take this unlucky errand before, this smell is much more lethal than I thought, if I can collect it, Ma Du would like to make a gas bomb and give it to Lao Chen.

Fortunately, the results are produced today, and tomorrow the errand can be handed over to the craftsman to do, so that he will go crazy if he stays for another day.

The collected manure is dried and ground in a large pot in proportion to the ashes, heated to about 75 degrees Celsius, and then filtered repeatedly.

Its purpose is to use the potassium ions in the plant ash to separate the nitrate in the soil to obtain a nitrate aqueous solution, and the relatively pure saltpeter can be obtained by heating and evaporation by crystallization. People who study medicine are not too bad at chemistry, and Ma Du still knows this basic knowledge.

Zhu Wenying twisted her nose and spoke, "This is saltpeter?" It doesn't seem to be the same as the previous one. ”

"Don't worry, this is definitely much better than what you used before, let's get out of here quickly and talk about it slowly somewhere else."

"Haha...... Good! It's really hard for you to let someone who loves cleanliness so much let you do such a thing. Zhu Wenying pulled Ma Du away quickly, and Ma Du took out another piece of paper and handed it to Zhu Wenying, "Give this to the gunpowder workshop and let them make gunpowder according to this new method." ”

"What's the difference? It's a few extra steps, what is this for? ”

"It's to make gunpowder into small particles, which are easier to burn and more powerful."

"Really? Why didn't you say it earlier. ”

"It's not because this is more troublesome to make, Chen Youliang was at the door of the house at that time, how can there be so much time for you to make granule gunpowder. Now saltpeter is tight, more powerful, and you can save a little bit. ”

"I think that this kind of thing is to make gunpowder into granules, in fact, those doctors in the wounded barracks will be better at it, I'll borrow two people to use it!" 、

"High!" Ma Du gave him a thumbs up, there were also various pills in this era, the big ones were the same as egg yolks, and the small ones were not much bigger than sesame seeds, and it would be great if the gunpowder particles could be made into the size of sesame seeds.

"Hey, hey!" Zhu Wenying smiled proudly, "Remember to leave me food!" After saying that, he ran away.

Ma Du went back to the small courtyard alone, and Zhang Wuliu came up very attentively, "Your bath water, sir...... Your Excellency, you stink! Immediately pinched his nose.

Ma Du was very annoyed and gave him two feet, "You kid said to run, if you stay a little longer, you will definitely stink better than me!" Tomorrow you will be punished for standing in front of the cauldron for a morning! “

"Don't! Other! The little one will pour you the bath water! Zhang Wuliu hurriedly ran away, shouting loudly, "Lao Liu, the adult is back, hurry up and give the adult bath water!" “

The weather is hot, there is no need to go to the house, just put a wooden basin in the yard and wash it in the yard. With a towel around his neck, Ma Du lay in a wooden basin, his head was covered with snow-white foam, and his hands were rubbing his head around, a bit like a shampoo room in later generations.

It's just that the owner of the hand is really stupid, and he doesn't know how many times he has buckled Ma Du's eyelids, Ma Du said to himself: "Zhu Wenzheng is really stingy, he has a bunch of wives with three wives and four concubines, and he doesn't give me two handsome little maids." "Imagine that the little white hands scratching on the head must be much more comfortable than Zhang Wuliu's clumsy hands.

In fact, it's really not that Zhu Wenzheng is stingy in this regard, rewarding his subordinate women, he doesn't know how much he has done, it is really because of Ma Du's special status, and there are big feet in the middle, he doesn't dare to make his own decisions.

Zhang Wuliu didn't have the slightest sense of professional crisis, and he was still making up his mind on the side, "If you want a maid to serve, you don't have to go to the governor, you can buy two from Renyazi for ten taels of silver, and it's not peaceful and worthless these days." ”、

Ma Du let out a sigh, "Forget it, I won't make this evil." "He came from a later generation, and naturally hated human trafficking.

Lao Liu put the dining table in the yard and listened to Ma Du's words: "My lord, this is not a sin, it is a matter of accumulating virtue, no matter who can give a mouthful of food to eat in these years, it is definitely a great virtue." If the adult wants a maid, the little one will ask you tomorrow. ”

"Don't mention this again!" Ma Du, who grew up in a later life with extremely rich material conditions, really can't equate a mouthful of food with the pain of separation from his parents and relatives.

"Oops! You're going to enjoy it. Zhu Wenying returned to the small courtyard and saw that Ma Du was taking a bath and began to undress, "Zhang Wuliu brought me a water scoop, I also have to wash, I stink to death." ”

Zhu Wenying took the water scoop, scooped water from Ma Du's bathtub, and poured it on his body one by one, a perfect figure, tall and well-proportioned, every movement made the muscles on the body squirt, but it did not look bloated, showing the beauty of majestic strength.

In the eyes of Ma Du, who aspires to be an art teacher, Zhu Wenying is definitely a good nude model. Touching his rib-like little breasts again, Ma Du couldn't help but feel ashamed of himself, rinsed his hair, and quickly got up, lest Zhu Wenying come up again to show off his tendons.

"I'll use that shampoo of yours."

Madu tossed him the bottle of shampoo, "That's it, I guess it's enough for you to use this one last time." ”

The little girl's toiletry set was filled with such a little shampoo, and it bottomed out after being used twice by Zhu Wenying, he didn't understand, what did he do with such long hair without shampoo, and the pillow smelled of dirty hair all day long.

No wonder ancient people liked to use ceramic as pillows, probably just to facilitate cleaning, well, it must be this reason.

Zhu Wenying, who took the shampoo, didn't wash her hair in a hurry but stared at Ma Du's lower body, "Your finch ......"

Being stared at like this by the famous Sparrow Harvester, Ma Du couldn't help but feel a chill in his crotch, and hurriedly covered it, "What do you want to do!" ”

Zhu Wenying put down her fingers and smiled strangely, "You have long hair!"

"Hairy?" Ma Du let go of his hand and looked down, sure enough, there were a few sparse bird feathers, Ma Du happily threw the towel, "Lao Tzu's adolescence has finally come!" It's finally time to develop. ”

No wonder I suddenly think of women, it's not for nothing. Zhu Wenying saw that Ma Du was very excited, so she asked lewdly, "Do you want me to take you to Fenglai Lou to open a meat restaurant and taste femininity." ”

"Come on, whose first time will be dedicated to Sister Yao'er, are you broken in the Qinglou?"

"No, my mother didn't let me go to that kind of place, and gave me a roommate."

Beast! Ma Du put up a middle finger in his heart, and the underage girl also got his hands on, he put on his big pants and sat at the dinner table, "Lao Liu will serve me a lot of food, give me a lot of food!" ”

Ma Du suddenly had a great appetite, the previous feeling of nausea and discomfort was completely gone, he took a bite of fat and took a few bites of rice, who would dare to laugh at Lao Tzu's height in half a year!

Before going to bed, he took off his shoes and made a small mark on the door. It's rare to go to bed early, and this night is really a spring dream without a trace......

(Thank you, Xuanyuan Jiuli, really like a ghost, Ming Dong, brocade, purple and grand, and new friends, all of them are empty)