The richest man Yang Fei

April [-], [-], this day, in the eyes of Westerners, is April Fool's Day.

But for Chinese people, the coming of this day is the beginning of the activities of Qingming Festival.

There was a lot of rain around Qingming, and the first three days and the last three days were the days of going to the grave to worship.

The willow tree on the side of the road has sprouted buds, and the green makeup is as tall as a tree. A branch is broken off, and a ring is made to wear on the head, which has a special flavor.

Yang Fei wore such a wicker ring on his head, with some small wild flowers inserted on it.

Su Tong weaved this for him, saying that wearing it on his head would bring him good luck.

Today's Yang Fei really needs a bit of good luck to support him.

The new product release conference of white laundry detergent was grandly held in the lobby on the first floor of the beautiful building in Wudaokou, Beijin.

A huge screen hangs in front of the stage, and a promotional film about the history of washing powder is played repeatedly on the screen.

"Chang'an is full of moon, and there are thousands of households pounding clothes. The autumn wind is endless, and there is always love in Yuguan."

This poem describes the laundry activities of the working people in ancient my country.

In ancient my country, the working people often used the pounding pestle, also known as the pounding anvil, for laundry. It is made of wood, similar in shape to a baseball bat, and about 30 centimeters in length.

Therefore, washing clothes in ancient my country was called "tampering clothes".

It is said that the pounding pestle was invented by people living near the water for the convenience of washing clothes, while the washboard was invented by people living far away from the water.

Uh, the washboard is said to have a new purpose in later generations?It cannot be described here.

The most beautiful description of laundry is "Xi Shi Huan Sha".

When the beautiful Xi Shi was washing yarn by the river, the fish saw her reflection and forgot to swim and sank to the bottom of the river. Therefore, Xi Shi was nicknamed "Sinking Fish" and became one of the four beauties in Chinese history.

Laundry is one of the most basic housework, and it used to be the most physically demanding housework.

After 4000 years of exploration and experimentation, humans have finally found an easy way to do laundry.The washing machine is known as one of the 100 greatest inventions in history. It not only represents the wisdom of the modern industrial revolution, but also frees millions of people from heavy housework.

The original clothing cleaning material is that people accidentally found that some utensils stained with some substances were easier to clean during sacrifices or barbecue activities, and then they searched for the reason and discovered the mystery of cleaning clothes.

This magical substance is plant ash.

According to records, in 600 BC, when the Phoenicians mixed goat fat and plant ash to make soap, the Phoenicians discovered the superior performance of surfactants, which can weaken the surface tension of water and make water better Penetrates deeply into fabrics, breaking down dirt and allowing it to float to the surface until it is eventually washed away.

The working people in ancient my country also discovered that plant ash can be used as a detergent.

In the Book of Rites, it says: "If the crown is dirty, wash it with ashes." It means that if the hat strap is dirty, wash it with plant ash.

This is because the potassium carbonate in plant ash can remove oil stains.

According to Kaogongji records, in order to make the silk soft and white, the ancients moistened the silk with plant ash water, put in the ash from shell burning, which the ancients called "phantom", and soaked it in water.

This is because plant ash water and shell ash can react to produce a strong base, potassium hydroxide.

Generally, the dirty substances on clothes are mainly oils, and most oils are greases. Under alkaline conditions, the degree of hydrolysis is intensified, and high-grade fatty acid salts and glycerin that are easily soluble in water are produced.

The main component of plant ash is strong base and weak acid salt, and its aqueous solution is alkaline due to the hydrolysis of carbonate ions.

During this period, in addition to plant ash, people also used a mixture of animal oil, vegetable oil, saponin, and alkali salt to wash clothes.

People in the Han Dynasty already knew to wash clothes with natural stone alkali.

In the Jin Dynasty, people added starch and spices to the stone alkali and sold it in the form of ingots.

At the end of the Ming Dynasty, Beijing had shops specializing in the sale of artificial fragrance bases. Among them, "Hexianglou" and "Hua Hanchong" were still selling boxed peach-shaped and gourd-shaped rose fragrances until the 50s and [-]s.

What happened to the "pancreas" that the elders said?

During the Southern and Northern Dynasties, Jia Sixie already mentioned using pig pancreas to remove dirt.

There is a formula in the Qianjinfang of Sun Simiao, the "sage of medicine" in the Tang Dynasty: use washed pig pancreas, grind it into powder, and add soybean powder and spices to make granules.

This is the ancient pancreas, also called bath beans.

Later, people combined the pancreas and balsamic base to make glutinous rice balls, such as sweet-scented osmanthus pancreas and rose pancreas.

With water and surfactants such as plant ash, people's clothes are much cleaner.

But whether you use a pestle or rub it with your hands, washing clothes is very hard.

Is there a labor-saving way to do laundry?

Have.

During sea voyages, sailors save much effort by washing clothes. They stuff dirty clothes into a cloth bag, tie one end of the rope to the ship, and throw the cloth bag into the sea. Just wash it.

Inspired by "sea laundry", someone invented a laundry device in 1677, which squeezed water through a device composed of wheels and cylinders, imitating the effect of sea laundry.

This device is the prototype of the modern washing machine.

The washing machine is known as one of the 100 greatest inventions in history.

Its greatness not only represents the wisdom of the modern industrial revolution, but also frees thousands of people from heavy housework and becomes an indispensable daily necessities for people.

The promotional video stopped abruptly here and continued to play repeatedly.

At the scene, in order to show the effect more intuitively, Yang Fei ordered people to put up several washing machines and perform a laundry demonstration on the spot.

Laundry is one of the most mundane things in life.For in the product of clothes washing, washing powder accounts for main status always.

However, careful people will find that the washing powder does not completely dissolve during use, and the residue is easy to cause damage to the clothes, and it is not easy to rinse.

Washing liquid main component is nonionogenic tenside, soil removability is strong, and can go deep into clothes fiber inside to play cleaning function, and decontamination is more thorough.

Moreover, no matter how high-quality washing powder is, it will hurt your hands more or less.

This is because traditional laundry detergents and soaps use anionic surfactants, mainly sodium alkylsulfonate and sodium stearate, which are highly alkaline, and the pH of laundry detergents is generally greater than 12. It is more irritating and harmful to the skin.

What Meili Group launched this time is a brand new laundry detergent that is completely different from traditional laundry detergent!

Laundry detergents mostly use non-ionic surfactants, the pH is close to neutral, mild to the skin, and after being discharged into nature, it degrades faster than washing powder.It can be completely dissolved and dissolved quickly, easy to rinse and wash, and will not harm the skin and clothes.

The slogan written by Yang Fei said: "This is a brand new detergent, the greatest new invention in the history of laundry, and the laundry revolution in the whole world will be refreshed from today!"

Countless media and reporters in the audience witnessed the birth of this miracle.

Can this new product end the industry war?Can Yang Fei and Meili Daily Chemical reach a new level?

Yang Fei has high hopes for this, and everyone will wait and see!