As the saying goes, there are three treasures in crossing, glass gunpowder soap.

Since the embryonic era of online literature, nine out of ten historical texts have these three inventions. Even if it is now fashionable to wear space battleships, the protagonists are still happy to make these three products.

However, the terrier is not old, and it is good to be practical.

The formula is simple and feasible, and it can be favored by the author for many years, which is very reasonable.

Jia Cong pinched a brush, bit the barrel of the pen, and tried to remember, what is the formula of soap?

Grease and caustic soda.

Grease, lard?

Jia Cong tilted his head, not to mention the price and quantity of lard before large-scale industrial farming, the taste of soap made from lard alone was extremely *, in ancient times without deodorization technology, unless the ancients were reincarnated as foxes, it was difficult to sell.

Butter?

The West uses tallow to make soap, which also has a long history, and the taste of tallow is light, and it has an excellent emollient effect, which is also the best choice. However, killing cattle was a felony in ancient times, and the source and quantity of tallow was also a major problem.

Coconut oil?

The seaside is too far away, I didn't see the Zhuangzi of Rongguo Mansion to send the seafood are dry goods, get a few coconuts or maybe OK, large quantities, according to the ancient traffic conditions, or dream faster.

You can only use vegetable oil, although soybean oil, peanut oil, etc., it is said that some people will be allergic, but often peanut allergies kill that is a foreign adult, and the Chinese people don't seem to be so strict.

It's a big deal, write two more lines.

In the future, you can also use tea seed oil to launch an anti-allergic type, and now tea seed oil is called tea oil, in addition to daily use, it also has medicinal value, and it should not be difficult to buy.

However, if you want to use vegetable oil, it is best to use a blend of oils and fats to foam and maintain firmness, facilitate packaging, and enhance the use effect.

Of course, if the sales volume is appropriate, you can use a single oil to make new products in the future, such as using pure castor oil as a special soap for shampooing, which comes with pink, cute, and special for little princesses.

Jia Cong made two strokes on the paper, writing down the content of the recipe and the selected oils in pinyin.

As for caustic soda, even if the soil soda shop is not all over the street, you can find seven or eight houses in the capital, a penny of silver and a catty.

Sesame oil is four cents a pound of silver, clear oil is three cents of silver a pound, and lard is five cents of silver a pound.

Jia Cong recalled the prices he heard from the people in Rongguo's mansion, estimated the cost, and in an instant, he was messy in the wind.

There was no industrial age, no convenient transportation, no scientific and technological progress, well, in ancient times, soap was also an extremely expensive daily necessities?

Even if Jia Cong is hot-headed and seeks praise at a loss, people who are used to using plant ash and soaphorn that don't cost money will pay for it, which is also a big question?

The stability of the small-scale peasant economy was helpless for the empire to break the situation.

Jia Cong is not bankrupt and proud of promoting industrial products, and he doesn't want to be a joke in the notes of the times, life is already so difficult, why bother to suffer again.

Probably, you can only take the luxury route, Jia Cong compared it in his mind, soap and the pancreas used daily in Rongguofu, and felt that the detergency of soap is still very competitive.

Modern people have a variety of marketing methods, and by the way, they can also take out a few things, and they can also beat the simple business thinking of ancient times.

However, marketing is costly, relying on word-of-mouth counterattack is very rare, the probability is slimmer than the sports lottery jackpot.

And Jia Cong only has two hundred taels of silver in his hand, he wants to produce products and engage in marketing, with such a little money, he really wants to look up to the sky and sigh, but Weichen can't do it......

After struggling for a long time, Jia Cong put his heart sideways, if he said that he couldn't do it, he wouldn't do anything, and then he couldn't do anything.

No matter how much, make the product first, and then consider the marketing later, I can't say that one day I can send a sum of money, it's really not good, it's a big deal to take the name of Rongguofu and then cheat a sum of silver, and then the product comes out, plus the interest will be paid back.

As soon as he made up his mind, Jia Cong immediately went to find Jia Huan, called Zhao Guoji, and went out to find a house, there was no way, the age was a hard injury, and he couldn't get out of the gate of Rongguo Mansion without an adult.

At that time, Jia Huan was leaning on the couch and pretending to be asleep, with an autumn-colored blanket on his head, while Aunt Zhao was sewing the soles of her shoes, chattering and complaining, and the sound of cicadas outside the window and Aunt Zhao's complaints were mixed together, with a sense of rhythm.

Seeing Jia Cong coming in, he just raised his eyelids, and said with a smile: "Brother Cong is here!"

Jia Cong seemed to be unconscious, smiled and asked Aunt Zhao Niang'an, and said, "I'll ask Brother Huan'er to teach me to read." ”

Aunt Zhao rolled her eyes and smiled impatiently: "Unfortunately, Huan'er slept and came back another day." ”

Suddenly, Jia Huanteng sat up from the couch and rubbed his eyes: "Who said that I am asleep, I am awake, I just close my eyes and recuperate." ”

As he spoke, he jumped down and said to Jia Cong: "Brother Cong, you wait for me for a while, I'll change my clothes-"

Before she finished speaking, she was interrupted by Aunt Zhao, she snorted twice in her nose, forked her hand to her waist, pointed at Jia Huan and said, "Rabbit cub, where are you going?" ”

Jia Huan grabbed a piece of clothing and put it on, and muttered, "It's better than listening to your nagging here." ”

After finishing speaking, he pulled Jia Cong, turned his head and ran.

Aunt Zhao chased after two steps, and scolded angrily: "Dirty and faceless things, you have the ability to run, don't come back if you have the ability." ”

In the past, when Jia Cong came over, Aunt Zhao was not full of smiles, but also kind, not as abnormal as today.

After running for a while, Jia Cong stopped and stood in the shade of the tree and bent over to gasp. Nowadays, the shade of the trees is thick, the half-green and half-yellow leaves are falling all over the ground, the dappled light and shadow are sprinkled, and the fallen leaves seem to be dyed with scattered gold, and the colors are so harmonious and gorgeous.

Stunned for a moment, Jia Cong rubbed his stomach and coughed: "What's wrong with your aunt today?" ”

Aunt Zhao, is this the eldest aunt coming, or is menopause coming, this temper is really inexplicable......

Gee.

However, in this case, even if you slander it in your heart, it will inevitably be embarrassing to say it, and it is better to be tactful when you say it.

Jia Huan bit his lip, turned his head to look at Aunt Zhao's yard, and pouted: "It's not the third sister, what the same aunt says is a brother, and there is only one to go to school, and there is no one who skips school, I don't make it, I take you badly, but my wife is not good at talking in front of the eldest lady......

In the eyes of every parent, their own children are perfect, and if there is anything wrong, they must be damaged by other people's children. Aunt Zhao is just a confused person, and it is not inexplicable to have such anger.

Regarding Tanchun's conclusion that Jia Huan would bring Jia Cong badly, Jia Cong could only shrug his shoulders, girl, you are too naïve, you want to be left.

"Alas, woman, your name is Trouble. ”

Jia Cong sighed, patted Jia Huan's shoulder, and smiled casually: "Let's go." ”

"Where?"

"Go to your uncle"

"My uncle, which uncle?"

"Stupid, Zhao Guoji, can you still go to Lord Wang?"

Zhao Guoji is very easy to find, since he got a reward of twenty taels of silver, he has been waiting outside the second gate of Rongguo Mansion almost every day, the purpose is very obvious.

You must know that Zhao Guoji's monthly money in January is only one tael of silver, and Jia Cong rewarded him with twenty taels with a wave of his hand, which is his monthly money for more than a year. Zhao Guoji felt a great sweetness, how could he not be respectful to Jia Cong, waiting in front of the car and behind the horse.

According to the logic of modern people, this matter is basically done by Zhao Guoji, and Jia Cong has a worthless manuscript, which is completely dispensable, and the silver should be Zhao Guoji's big head.

However, without Jia Cong and Jia Huan's assurance, he would not dare to do such a thing if he gave Zhao Guoji ten dares.

In case of an incident, with Jia Cong and Jia Huan in front of him, he will be beaten at most and deduct some monthly money, but without Jia Cong and Jia Huan, he will do it himself, beat him to death with a stick, and others will say that he deserves it.

Class society is like this, and the minions are like a mustard and worthless.

People like Zhao Guoji, who have no errands for the time being, can come in occasionally to shop, but when they come in every day, they are a little dazzling, and it is inevitable that someone will go to Sister Feng and say it.

It's a shame that Jia Cong knew, so Zhao Guoji didn't care too much about money, bought some worthless melon seeds and peanuts and scattered them to the little guys and mothers-in-law outside the second gate.

Zhao Guoji heard that Jia Cong and Jia Huan were going out, and he was in the middle of it, and before he could make tea, he got a carriage. Jia Cong smiled: "I haven't seen you for a few days, your ability has risen!"

Zhao Guoji was a little embarrassed, and said vaguely: "I have nothing to do, I invited those people in the stable to drink twice, and I just had a little friendship." ”

Jia Cong's mind flashed with inspiration, and he smiled very kindly: "It's better to have a friendship than no friendship, in the evening, Brother Huan'er and I will give out money, and you invite them to a table of wine." I have to bother them in the future. ”

If you want someone to do things, you have to call people, and judging from the virtue of these children in Rongguo Mansion, giving a little favor is more effective than Sister Feng'er's speech.

Jia Cong didn't have any master-servant thoughts, he should have given money to ask people to do things, and Rongguofu gave him a salary, so he should have given a tip.

The carriage galloped out of Rongguo's mansion, and Zhao Guoji asked, "Two brothers, where are we going?"

"Who is the most trustworthy tooth man in this area?" Jia Cong stretched out two fingers, lifted the curtain, and glanced out.