The tyrant of the Great Zhou Dynasty starts by summoning a fierce general!

Xiao Yan'er really fell into deep thought, of course, this name was just a little bad taste of Lu Yao.

Xiao Yan'er's opening of a restaurant happened to remind Lu Yao.

Lu Yao is very short of money now, and every expedition is a consumption of the treasury.

However, now that Da Zhou has experienced a major drought and a Yellow Turban Rebellion, Lu Yao's finances are also stretched.

Relying on Wang Yong's glass to barely maintain the financial deficit, as a traverser, he would worry about money, which is simply a shame for all traversers!

Lu Yao, who is too powerful, naturally can't do it, after all, before the crossing, Lu Yao was just a social animal in the magic capital.

Although it is just a small social animal, it also has big dreams, living in an era of information explosion, Lu Yao naturally understands what business is the most profitable.

That's the monopoly business.

No matter what you do, as long as you can monopolize the entire industry, you will definitely make huge profits

! Lu Yao was also a big fan of historical novels before crossing over, and what is the biggest advantage of traveling through time? Is the information poor! The things that Lu Yao had in his mind that were worthless after thousands of years were enough to amaze everyone now

! As long as he mastered things that others could not grasp, wouldn't this form a monopoly!

For example, soap and perfume are two things, the cost is low, but one is a must-have for ordinary people, and the other is an absolute weapon for harvesting rich women.

Although scholars often say that officials do not compete with the people for profit, Lu Yao feels that he does not shudder when making money.

This should be called taking from the people and using it for the people.

As soon as she thought of this, Lu Yao did not hesitate, and casually prevaricated Xiao Yan'er with two sentences before sending her away.

Then he immediately instructed Li Yuanfang to go to the market to buy some lard and come back.

The thing that Dazhou uses for cleaning today is a plant called Saponaria, which is a plant with a high alkali content, which is very suitable as a natural detergent.

However, if this thing is used for a long time, it will cause the acid-base balance of the skin to be out of balance, and there is no way to do it.

So Lu Yao's first step is to try the water first, and make this easiest soap

, which is shallow on paper, although it is said that this kind of thing is already a bad method, but it is really Lu Yao's turn to practice,

and he is still a little panicked.

It happened that Wang Meng and Di Renjie came to the palace to report to Lu Yao about the scientific expedition three days later, but they didn't think about it, but they were left by Lu Yao to be used as coolies.

A moment later, Li Yuanfang returned with a large barrel of lard.

Wang Meng and Di Renjie glanced at each other, they didn't know what Lu Yao was doing, but the two of them were also looking forward to it, after all, Lu Yao had too many surprises for them.

At present, Dazhou lard is the main source of oil, so it is very convenient to buy.

After the lard was in place, Lu Yao immediately asked Li Yuanfang to set up a large iron pot in the palace, and melted the purchased lard in the iron pot.

Then Lu Yao said to Wang Meng.

"Go get some quicklime.

Although Wang Meng didn't understand what Lu Yao wanted to do, he still did it.

Quicklime is only available in pharmacies, except for the bricklayers who glue the walls.

So Wang rushed to the Imperial Doctor's Office to get quicklime.

Before leaving, the imperial doctor did not forget to instruct Wang Meng that he could not eat this thing indiscriminately, and eating too much would kill him.

I have to say that Chinese medicine is really broad and profound.

After taking quicklime, Lu Yao added water to mix it into quicklime solution, and then poured it into the iron pot one by one.

Immediately, the lard in the iron pot boiled, and then it gurgled and bubbled.

Then Lu Yao mixed the alkali used for the noodles with lime water, and the main function of this step was to extract the most important thing in the saponification reaction, caustic soda.

After a few moments, the solution in the pot ended the reaction process, and the precipitate and the upper layer of the solution were formed, and this transparent solution was the legendary caustic soda.

Lu Yao carefully took out the caustic soda from it, this thing is very powerful, very corrosive, and if you don't pay attention to dripping it on the skin, it will cause skin ulceration and burn.

After taking out the caustic soda, pour it into the oil pan, stir it well to dissolve, and leave the rest to time.

Of course, in this process, Lu Yao was not idle.

Instructed Di Renjie to go to the imperial dining room and brought some marinated blocks for ordering tofu, the reason why Lu Yao found this thing was because he had read in a book before that he used marinated blocks to make hydrochloric acid in the three acids, the so-called three acids refer to sulfuric acid, hydrochloric acid, and nitric acid.

Limited to the current science and technology, and Lu Yao's own knowledge limit, wanting to create this pure triacid is equivalent to a fantasy.

Therefore, it can only be replaced by a halogen block temporarily, and Lu Yao heats and dissolves the halogen block.

At the same time, the saponification reaction in the large iron pot is also nearing the end.

There was a layer of yellow grease on the surface of the iron pot that began to solidify, and Lu Yao was pleasantly surprised when he saw this.

Because this is the soap he wants to make, Lu Yao hurriedly ordered Li Yuanfang to take out a small piece from the pot, who expected that Lu Yao smelled a fishy smell of lard as soon as he stepped forward, so smoked that Lu Yao almost vomited today's breakfast.

Seeing this, Lu Yao hurriedly instructed a palace maid outside the palace.

"Go get some rouge gouache. The

palace maid hurriedly left, and after a while, she returned with some rouge gouache in her hand.

Lu Yao hurriedly fused these rouge gouaches with freshly baked soap, which covered the oily smell of the soap itself.

Lu Yao looked at Da Zhou's first piece of soap in his hand, and felt a sense of accomplishment in his heart.

casually handed the soap to Wang Meng's hand and spoke.

"Aiqing, go wash your face with this thing.

Wang Meng was a little overwhelmed when he heard this, but he couldn't stand Lu Yao's eyebrow-squeezing action, so he could only do it.

Take some soap and place it in the palm of your hand and apply it all over your face.

This slippery feeling made Wang Meng feel a little wonderful.

Then, under Lu Yao's expectant gaze, Wang Meng cleaned the soap on his face with water.

It didn't matter if he washed it, Wang Meng suddenly felt like he had been reborn, and his originally rough cheeks became extremely smooth at this time, and not only that, but he could vaguely smell the faint smell of rouge gouache in the air.

Wang Meng looked at the thing in his hand and couldn't help but be surprised.

"Your Majesty, what is this?" Lu

Yao stood with his hands in his hands, pretending to be profound.

"This thing is called soap, and it is more than a hundred times stronger than soap to wash clothes with this thing for washing your face and clothes.

Lu Yao continued.

"And now years after years of war, the treasury has long been empty, relying on the taxes of the counties is also beyond their means, if you want to sweep the world, it is not easy to have no financial support, it is better to open source than to throttle, this thing is cheap to cost, but it is very easy to use, I want to push this thing into the market, convenient and beneficial at the same time, make some money to supplement the national government, what does Aiqing think?".