Regarding the establishment of official files, Zhu Yijun quickly arranged for Zhang Whale as the focus of the next step of the East Factory's work. Although it is time-consuming and labor-intensive, Zhu Yijun attaches great importance to this matter, and he also believes that after this matter is completed, it will bring him a lot of benefits.

After arranging the things here, Zhu Yijun began to care about Chen Ju's affairs again.

The task assigned by Zhu Yijun to Chen Ju is also very simple, to put it bluntly, it is to support the military situation from the new.

Although the War Bureau is an empty shell yamen, its reputation is still there, and there are many fewer scruples in doing things. Zhu Yijun also took a fancy to this, so he didn't start anew. Relatively speaking, the war situation will not be too resisted.

It's just that Zhu Yijun let Chen Ju go, but he didn't give Chen Ju financial support.

Whether it is now or in the future, you can't play without money, Zhu Yijun sent Chen Ju over, in fact, he wanted him to familiarize himself with the military situation first, adapt to it, and then start the formal work.

After learning that Zhu Yijun was coming to the military battle, Chen Ju was waiting here for a long time.

As an ordinary eunuch in the palace, Chen Ju was excited and excited when he was reused by Zhu Yijun, and vowed to make some achievements. But after coming to the war bureau, Chen Ju was dumbfounded.

If you want money but no money, if you want people and no one, the war bureau is an empty shelf, what should you do?

After completely sorting out the affairs of the military battle, Chen Ju's heart was almost cold, such conditions, let alone completing the tasks assigned by the emperor, even a little money would be a problem! You can't get some weapons and armor to sell, can you?

First, Chen Ju doesn't have the courage, and secondly, there is no channel! Don't sell it here, and let people report it there.

After hearing that the emperor was coming, Chen Ju was naturally very worried in his heart, and in Chen Ju's opinion, he was afraid that he was going to disappoint the emperor this time.

After Zhu Yijun came, accompanied by Chen Ju, he visited the entire military battle bureau, and asked a lot of questions, and found that Chen Ju answered these questions fluently, which can be said to be like a treasure, Zhu Yijun nodded with satisfaction.

Dongchang had already reported Chen Ju's matter to himself, and although Chen Ju was thinking of a way during this time, he didn't do anything bad about the rules, which made Zhu Yijun very happy. These are enough, as for whether Chen Ju has made achievements or not, Zhu Yijun doesn't care so much.

"Chen Ju, you did a good job!" Zhu Yijun looked at Chen Ju with a smile and said.

"The slave has the grace of the emperor, the slave, the slave!" Chen Ju was a little restless, and hurriedly spoke.

Zhu Yijun waved his hand and said with a smile: "You did a very good job, I am very satisfied, I came here today to give you a way to make money." After speaking, Zhu Yijun retreated, but let people leave a big wooden barrel.

"Do you know what's in there?" Zhu Yijun pointed to the big wooden barrel and asked with a smile.

"Slaves don't know!" Chen Ju hurriedly shook his head.

Zhu Yijun felt that he had a bad taste, shook his head, reached out to open the lid of the barrel, and said with a smile: "This is a barrel of lard, you will rely on it to make money in the future, learn hard, I will only teach it once." ”

Originally, Zhu Yijun wanted to draw a picture for Chen Ju to get it himself, but after thinking about it, he still felt that it was more reliable to teach it again and save some time.

What Zhu Yijun has to do is saponification reaction, dissolve quicklime in water to make lime water, and then pour baking soda into it, baking soda, which is used to steam steamed buns and buns in later generations, the main ingredient is sodium bicarbonate, and after reacting with lime solution, calcium carbonate precipitate and upper clear solution are generated.

These serums are sodium hydroxide, which is also what Zhu Yijun needs.

Many people don't know sodium hydroxide, but when it comes to another name, there are many people who know it, that is, caustic soda, which is an important industrial and chemical raw material and is extremely corrosive.

Zhu Yijun skimmed out the liquid with a glass spoon, for fear of spilling a little bit, once the caustic soda touches the skin, it will cause serious burns. For these things, Zhu Yijun is very careful.

The last time sodium cyanide was prepared, Zhu Yijun took a risk, and he has never done it since.

Pour the skimmed sodium hydroxide solution into a hot oil pan and stir thoroughly, and the saponification reaction will occur.

Zhu Yijun looked at Chen Ju, who was burning the fire next to him, and said with a smile: "Don't stare at it, I will give you a book, which has detailed records." You can just look at it now and write down the general steps. ”

Although Zhu Yijun said this, Chen Ju still didn't dare to be careless, this was taught by the emperor, if you forget that you will die!

Zhu Yijun stirred the oil pan evenly, and the next thing was to wait. In this process, you need to put a few drops of brine, which is the brine used to point tofu.

After a short time, the lard in the pot has begun to saponify, and the oily yellow soap on the top layer has begun to solidify gradually.

Zhu Yijun hurriedly said to Chen Ju: "Look, take advantage of this time to take out the purest soap on the surface, and then put in rouge powder, this is the first thing we make money, it is called soap." ”

Lard soap that has not been treated in any way will have an oily smell, and even after making soap, no one wants to use it to make a lard smell.

Although adding annatto powder can mask the taste, it is not the best choice. Of course, the best choice is to use floral essential oil, but things have to be made from generation to generation, and they must be updated from generation to generation, and new products can make money!

It's marketing.

After making the soap, there are still some cloudy soap and alkaline waste liquid left in the pot.

The middle layer of turbidity was skimmed out, and Zhu Yijun put them into a basin. The ingredients in this are mainly lard and impurities that are completely reactive, and a small amount of soap. Zhu Yijun added the mixed brine to it and stirred it vigorously to heat.

After a while, the lard in the basin changed again and gradually solidified.

"This is our second money-making thing, this is wax, which is used to make candles for lighting!"

Chen Ju was almost dumbfounded, he didn't know that it was just a barrel of lard, why did the emperor come up with so many things in a different way? He didn't know what the soap was for, but he knew the candle!

Now the best candle is a butter candle, but the Ming Dynasty forbade the slaughter of cultivated cattle, and there are no butter candles to sell on the market.

What Chen Ju didn't know was that the candle made of animal fat had a bad smell because of the glycerin in it, and the flame was smoky when burning. If you use stearic acid to make candles, not only will the flame be bright when burning, but there will be almost no black smoke and no air pollution.

This is what Zhu Yijun did, so that the candles produced are not only smokeless, burn well, but also cheap.

For the noble and wealthy, smoke-free is enough, and reading a book at night, whether it is an oil lamp or a grease candle, is all smoky and smoky. Once this candle is on the market, it is bound to be a big hit.

The final product of the whole saponification reaction is the glycerol mentioned above.