I didn't say anything all night, and I got up early the next day and practiced as usual. It's just that from today, the content of the morning exercise has become learning swordsmanship.

Everyone, including Li Ziyu, listened carefully to the basic essentials of practicing swordsmanship that Bu Jiu said.

One look, two techniques, three body methods, and four steps.

And taught the first sword style of the first stage of the first stage of elementary swordsmanship, lunge straight stab.

Today, everyone cut a branch from the woods to temporarily replace the sword, and practiced lunges and stabs very seriously according to the posture of Professor Bujiu.

It's an extremely simple action to look at, but it's not easy to do. Either it's wrong here or there, everyone was almost scolded by Bu Jiu.

announced that he would practice something else, and he wouldn't have to follow tomorrow The most hit was Xiao Ou, who was directly practiced by Step 9. Xiao Ou secretly wiped his tears behind his back, bit his lip and went to run alone.

After finishing the morning exercise, Li Ziyu sighed that this martial arts master is not so easy to practice. It's so difficult to have some foundations in modern times, and if you don't have a foundation, your hope is even slimmer.

After everyone had breakfast, Xiaoshan took his younger siblings to study as usual. Ouyang Luo and Xiao Ou were doing needlework in the house. Step 9 and Step 10 are back in the tree.

Li Ziyu pulled the green bricks today because she made arrangements with the old village chief yesterday, so she didn't have to worry about it. She talked to her aunt Ouyang Luo and asked her to make herself a set of hats, masks and gloves, so she carried a bamboo basket sealed with old cloth and a wooden scoop to the back mountain.

Masks, hats and gloves are used to protect against the dust when potassium nitrate is extracted. This dust is irritating to the respiratory tract and can cause pulmonary edema if inhaled at high concentrations. In severe cases, headache, dizziness, cyanosis, nausea, and vomiting may occur. More severe cases can cause respiratory disturbances, collapse, and even death.

Although you will be careful, you must not make the slightest mistake in the necessary protective measures. She didn't want to die before she left the school, and it was her goal to bring up the potassium nitrate safely.

Yes. She's going to try to purify the potassium nitrate today. Tomorrow is the sixth day of the new year, and she must go to Nanhui County to buy land. If she bought the land, she had to concentrate on taking care of it, and she had to buy a few families there to take care of the 100 acres of land for her. Of course, it is best to take Zhuangzi's land with you, so that you can live in your free time.

Anyway, when it comes to purifying potassium nitrate, she has a little free today, so she has to hurry.

The raw materials for extracting potassium nitrate are plant ash and nitrate. There is grass and ash at home every day. However, it is usually found in toilets, pigs, cattle pens, old corners of courtyards, cliff edges, caves, and ground that is not easily washed by rain.

Li Ziyu remembered that in the area close to Dongshan, there should be nitrate. Because it's a little off the beaten track, and there happens to be a large protruding rock at the top. The following will definitely form the nitrate she needs.

There is also a little nitrate near the toilet at home, but the amount is too small for her to purify.

When Li Ziyu walked towards Dongshan according to his memory, he felt that someone was following him. Hurry up and take a few steps to hide behind a big tree. Quietly poked his head out to look. I saw that Bu Jiu flew almost at a drifting speed. Silently fell in front of her.

Li Ziyu breathed a sigh of relief and asked, "When did you follow behind?" ”

"You followed when you came out. Where are you going? Step Nine replied.

"I'll go over there and get something, and since I'm here, let's go together."

Li Ziyu took the lead and walked forward as she spoke, and Bu Jiu followed behind.

The woods were quiet, except for the sound of the breeze blowing the leaves to the ground. Occasionally, small animals will pass by in the distance, but it seems even more quiet in the woods.

The two came to Dongshan one after the other. There are a few trees here, and the grass is scarce. However, there are various rocks that have been eroded, weathered, and exposed to the sun by wind and rain. A layer of granular rock chips has formed on the surface.

There is an open field between the rocky mountains and the woods, about half the size of a lot. In the sky above this open field. There was a huge rock protruding from it, like a giant umbrella firmly covering it.

Li Ziyu walked in front of the open field, only to see that there was indeed a layer of powdery things like frost flowers on it. This is the nitrate she was looking for, one of the must-have for purifying potassium nitrate.

She put down the bamboo basket and took great care to hold the nitrate into the basket with a wooden scoop. When Bu Jiu saw it, he also held it in his hand and put it in the bamboo basket.

The two worked for more than half an hour before finally filling the bamboo basket.

Li Ziyu picked up the bamboo basket on his back, and hurriedly returned with Bu Jiu.

After returning home, Li Ziyu immediately matched the nitrate soil and plant ash according to the proportion, put it in a wooden bucket, added most of the boiling water and began to stir. Stir for about 15 minutes and then strain once. Add hot water to the slag and continue to stir, then filter again.

The twice-filtered water is to pour the nitrate into an iron pot, boil it on a low heat below, stir it on the top, and when it has evaporated two-thirds or four-thirds, the fire is withdrawn.

At this time, the viscosity of the solution is high, and after rapid cooling, the solubility decreases, and a large amount of potassium nitrate crystals will be precipitated. At this time, the potassium nitrate was not very pure, and the potassium nitrate crystals were obtained by filtration again.

Li Ziyu carefully wrapped them in oiled paper into packets, and when they were all wrapped, it became a problem to put them there.

This thing should never be placed in the hall, and it should be kept away from the fire. The charcoal and sulfur I bought last time are still in the hall. These three things are to stay away from the fire, and I am really negligent.

Li Ziyu suddenly thought of a place, so she moved out the charcoal and sulfur she bought last time, and let Bu Jiu follow her, and the two came to the dead wood tree hole behind the house.

Yes, Li Ziyu thought of this place. It's not only airy, it's also shady, making it the best place to put these things.

With these things, the allocation of gunpowder is a matter of minutes. Li Ziyu didn't want to configure it now, she wanted to wait for Wang Tiehammer's grenade shell to be made, and it should be too late to start configuring.

Li Ziyu and Bu Jiu went down to the cave, put a bamboo basket containing charcoal, sulfur, and potassium nitrate in a corner of the cave, covered it with a piece of straw, and the two of them left the cave.

Solving this important matter, Li Ziyu felt much more relaxed, and even went back with brisk steps.

When the two returned home, Ouyang Luo and Xiao Ou were already cooking lunch. Li Ziyu was shocked to realize that half a day had passed like this.

Now everything in the kitchen is still handled by Ouyang Luo and Xiao Ou's mother and daughter, and everything is still the same as before. Although I recognized my aunt, I was even more polite when I was a family.

Li Ziyu didn't want her aunt to work so hard, but thinking that she was busy all day, she really didn't have time to cook, do laundry and tidy up housework. If you buy a rough maid to cook and wash, it's not impossible. However, there will be more gossip in the village. In the village, there really isn't a family that calls a maid, and your own family can't do this, right?

To Li Ziyu's surprise, since Xiao Ou knew about each other's kinship, he was more active in his work than usual. Especially after knowing that he is still a good citizen, his enthusiasm for work is unprecedentedly high. Every day is smiling, and it can be seen that she is really happy.

Her happy mood also infected everyone, everyone maintained the best state, whether it was learning or practicing martial arts, the effect was surprisingly good.

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Thank you for the starting point of the reward! (To be continued......)