Datang infinite pretense system

This is a huge space. Although it is located in the depths of the palace, it is bright inside.

There are glass mirrors everywhere, as long as it is not at night, it can basically be as bright as the outside here.

He walked to a place full of fragrance, where a large amount of soap was piled up.

There are different scents, but he didn't come because of the soap.

Li Chengqian has been thinking in his heart: Dry skin is nothing more than a chemical that needs to be used, that is glycerin, and the easiest way to obtain glycerin is to separate it from soap.

As far as he knows, the liquid left after the soap is made is a mixture of glycerin and caustic soda aqueous solution, and then the caustic soda can be neutralized by titration with acetic acid, and the sodium acetate can be separated by recrystallization, and finally the water is removed with quicklime, and the remaining glycerin.

As it happens, he has a lot of soap leftovers, glycerin and so on, isn't it very easy to make?

Actually, he didn't need to pay attention to the words of Empress Changsun.

But in order to reap the goodwill of Empress Changsun, let him stand up in front of Li Shimin and speak for himself, and don't let Li Shimin have bad emotions towards him.

Moreover, he still needs to test whether glycerin can really be produced.

This matter is very important!

why?Because glycerin is an indispensable product for making gunpowder.

With glycerin, will gunpowder be far behind?

But now they are not in a hurry to study gunpowder, and just make the most powerful thing if they want to, at least not now.

But when he appeared, someone greeted him.

"I have seen His Royal Highness!"

There are dozens of people here, coming and going, they are the researchers in this laboratory.

Li Chengqian said directly:

"Help me create the liquid below... so... so... and then purify it!"

These people are actually the existences that he has been trained in teaching ability, and their research ability can be compared to that of scientists in the nineteenth century.

Therefore, he simply said some methods, and these people fully understood.

"Understood, His Royal Highness!"

It doesn't take much time to purify glycerin.

Li Chengqian started to make other preparations for other people.

What he wants to create this time is something that will become popular in Tang Dynasty in the future.

As for this laboratory, of course he will not be known by outsiders.

This is the foundation of Datang's strength.

"how long?"

"A quarter of an hour will be enough!"

"The king is waiting here. Also, come! Bring me the little glass bead bottle!"

"Yes!"

……

After a while, Li Chengqian left the laboratory.

At the same time, Empress Changsun was also a little restless waiting.

As soon as he came, he asked:

"Gao Ming, where did you go?"

"Mother, please read."

Excessive explanations are of no use at all, it is better to release the things to shock Empress Changsun.

"Oh, what is this?"

Empress Changsun took the glass bottle from Li Chengqian's hand.

"Look and see."

"This glazed bottle is really exquisite, and there is still some fragrance in it."

Of course, this is a glass bottle for cosmetics, so of course it must be made to look better.

The essence of useful things is the same, but the good-looking appearance needs to be packaged.

Just like domestic products, such as Dabao SOD honey, compared with foreign water, its effect is not inferior, and the price is still affordable.

It's not because our products are poor, it's because foreign countries are talking about some high-tech things. In fact, cosmetics are nothing more than that, and glycerin is always changing.

Of course, some people buy peace of mind.

"open to take a look!"

Empress Changsun opened the bottle suspiciously, and a burst of fragrance filled the air.

Inside is a snow-white paste.

"This is?"

"My son calls it body lotion, can the empress rub it on her face?"

Li Chengqian said so.

Empress Changsun didn't have any doubts and just followed suit.

Her slender corns gently drew out the white paste in the bottle, and then applied it to her face.

"Fragrant, gentle!"

These were the two words that Empress Changsun uttered immediately.

"The queen mother looks in the mirror."

Empress Changsun took the mirror and looked at it. She held the mirror tightly with both hands, and she didn't intend to look down.

"This body lotion is really good, it makes my face look very hydrated."