Ready to use the materials, the Li family started work again vigorously!

Red bricks are crushed, fly ash, coal gangue, etc., mixed with water, beaten into blocks of equal size with abrasives, and then calcined at high temperature in the cave!

Li Qingfeng was not there when I tried to burn last time! Now I saw a few nephews mixing ingredients! The memory goes back to the past, as if I will see that others are not like this, and I always feel a little different!

"Wait, Anfu, stop for a moment and let me think!" Li Qingshan hurriedly waved his hand to ask everyone to stop! Frown and think!

"What's wrong, uncle? Isn't that right? Li Anfu hurriedly came over and asked.

"Well, it seems that the cinder wasn't so big when someone else mixed the ingredients, and it was quite broken! Is it because of this, you say? Li Qingfeng remembered that others didn't use such large particles!

"Possibly, why don't we try?" Li Qingshan thinks you can try it! Looking at the eager expressions of several sons, they are obviously willing!

"Grandpa, I think we can do this!" Li Hui must not be absent at this moment!

"We can grind them into slag of different sizes, and beat them into bricks and burn them! See which is the strongest is the best! What do you think? ”

"Oh, what a good idea! Hui'er, why are you so smart! Li Anxi shouted, and suddenly felt that this was a better way, why didn't everyone think of it, so that there was no need to burn one kiln at a time, and the good and bad could be compared at one time!

In fact, there is nothing unusual, Li Hui also suddenly thought of the modern commonly used method of doing experiments, controlling a constant amount and changing the random quantity! It's just that I've been in ancient times for a long time, and I've almost forgotten about it, and I never thought I could try it like this before! I don't know what's going on today, but I have a flash of inspiration!

"Yes, this method is good, I can't remember what size particles I want, Hui'er is amazing!" Li Qingfeng also had to admit that the granddaughter of his younger brother's family was much smarter than his own, and the big ones in the family didn't know anything else except housework needlework, let alone the small ones, which ones were like Li Hui, and the ideas at a young age were one by one!

"Okay, that's it, then let's try each one this time!" Li Qingshan, as the head of the family, made the final decision!

"Dad, what size are we going to make?" The idea is there, but the specific plan has not been decided, the most important thing is to crush it into what size?

"Let's all talk about ourselves!" Li Qingshan asked his sons to express their opinions!

"I don't think it can be too big! If you think it's too big, it's definitely not solid! As the boss, Li Anfu was the first to speak!

"Yes, I think the biggest one is as big as a peanut! The others are just slowly getting smaller, and get a few more! ”

"It's too broken to get it, and we can't get it like powder, or it's the same as rice!"

The Li brothers took turns to speak! Let's talk about the big ones first, then the back rows, and finally Li Anxi!

"It can be the size of a peanut, then half the size of it, half the size of it, and then half the size of it, and finally it will be the same as a grain of rice!" What the elder brothers said makes sense, Li Anxi is fully divergent thinking, which is in line with the modern test method!

Several other people nodded in agreement, and Li Hui couldn't help but clap her hands, and then she found that she was useless! You've got things settled!

But the problem is again, this size is not easy to control, how to make them about the same size?

"This is simple, just like we sift the grain, just make it into a sieve, let your lobby brother do it, and it is not a problem to know some carpenters!" Li Qingfeng solved Li Anshou's problem in minutes!

A few children in the family can be carpenters, and they can use some wooden strips to order sieves with different sizes of sieve holes, which are larger than sieving grain, or waste time!

"Then this can't be mixed today, you go and grind it with a mill first, and I'll let them prepare the sieve as soon as possible! Take it one step at a time! Li Qingfeng thinks that making a sieve is a laborious thing, and it requires a lot!

"Mmmm, if you're not in a hurry, you can do what you can first, and you won't delay things!" Li Qingshan is not an impatient person, slow work and meticulous work!

"By the way, Grandpa, we haven't decided how many of each type to make? In this way, we can know how much we have to grind, and we don't need to grind more! Li Hui saw that Li Qingfeng was leaving, and suddenly remembered that the number had not yet been determined!

"Well, I can't see it if I see too little, and it doesn't take much to hit bricks, just three hundred! You can also try whether it is strong or not! Li Qingfeng thought about it for a moment and determined the quantity!

"I think there are about 2,000 in total, and I'll let them make a few more molds, the last estimate was not enough!" Li Qingfeng thought that there were not a few molds in total last time, and this time it happened to be done, saving the trouble in the future!

"Thank you, grandpa!"

After Li Qingfeng left, Li Hui didn't have anything to do, and the advantage of having many sons and filial piety was that Li Qingshan had to help, but he was also driven home! As a result, the grandparents and grandchildren became the most idle people!

"Old woman, how many taels of silver will you give me?" Suddenly, I remembered something, Li Qingfeng asked the Niu family for money!

"What's the matter?" The Niu family felt inexplicable, what was the matter with Li Qingshan asking for silver as soon as he came back!

"It's not that the eldest brother's children have helped so much, and they haven't given anything, so we can't always let the children work in vain, and delay other people's work! The eldest brother has no opinion, and the nephew and daughter-in-law are estimated to have an opinion! "Li Qingshan always said to give money, always forget, today is just an opportunity!

"Okay, I'll get it for you!" After saying that, Niu Shi went into the back room and took out an ingot of ten taels of silver from the box where the money was kept!

"Is it enough?"

"That's enough, that's it, I'll send it to them!" Li Qingshan took the silver, turned around and prepared to leave!

"Grandpa, wait for me, I'll go too, I want to see how the wooden sieve is made? I haven't seen it yet! Li Hui came out again, after so many years of modern life, I never knew that wood could be made into a sieve, and everything I saw was iron or stainless steel!

I'd love to see the craftsmanship of the ancients!

"Let's go!" It's normal for children to love to play and be curious, Li Qingshan is happy to take his grandchildren out to play!

Approaching Li Qingfeng's door, I saw that the family was already busy, some were cutting wood chips, and some were bent on the edge of wood, anyway, the three Li Ansong brothers were not idle!

"Uncle, what's the matter with you?" Boss Li Ansong asked!