Su Qin saw Xia Yingchun's obsessive attitude towards the glass mirror, and he didn't speak, just waited on the sidelines. After a long while, Xia Yingchun came back to his senses and said to Su Qin: "I really like such a good thing, which makes Mr. smile." ”

After listening to this, Su Qin replied, "The princess doesn't have to mind. This mirror is just a gift from Cao Gong as an old man to you, and the real thank you gift is still to come! ”

When Xia Yingchun heard this, she also became interested. She was desperate to know what was more valuable than this glass mirror.

Su Qin clapped his hands, and then another attendant walked in with a wooden plate. On a wooden plate, it is covered with a layer of silk cloth. Su Qin lifted the silk cloth, revealing a completely transparent glass bottle on the plate.

Women are naturally interested in crystal clear things, and Xia Yingchun is no exception. When she saw the glass bottle, she immediately fell in love with it as if she had just liked the mirror. But this time, she was not as excited as she was when she saw the glass mirror just now, after all, in her eyes, the glass mirror could allow her to see her face clearly, although this glass bottle was beautiful, it couldn't catch up with what she had just done in terms of practicality.

Su Qin took in Xia Yingchun's expression, and roughly guessed her thoughts, and then said to her: "Does the princess feel that Cao Gong's formal thank you gift is far less valuable than Fang Cai's mirror?" ”

After listening to this, Xia Yingchun pursed her lips and did not reply, but her meaning was undoubtedly revealed.

Su Qin said: "This glass bottle, although it is also valuable, but compared to the things in the glass bottle, its value is far from enough. I believe that the princess will love the contents of the glass bottle very much! ”

Xia Yingchun listened to Su Qin's words, and looked at the glass bottle on the plate again, only to find that in this glass bottle, there was a small amount of transparent water, and she directly ignored it just now.

Xia Yingchun asked, "The thank you you said is the water in the bottle, right?" What's so peculiar about this water? ”

Su Qin did not respond positively to Xia Yingchun's question, but asked Xia Yingchun rhetorically: "As the favorite concubine of King Qi, what is the most important thing for the princess?" ”

Xia Yingchun saw that the other party did not answer her own question, but asked her again, and she was a little unhappy, but for the sake of this young man giving her so many gifts, she still replied honestly: "The most important thing for me now is naturally the king's favor." ”

Su Qin asked again: "King Qi favors the princess, so the princess can have today's status." But the princess thinks that the king of Qi can always be fond of you? ”

Xia Yingchun listened to Su Qin's words and said with some frustration: "This is naturally impossible. ”

Su Qin asked again, "Why can't you?" ”

Hearing Su Qin's straightforward question, Xia Yingchun was also a little annoyed: "The king loves me now because I am young and beautiful and good-looking. When I am old and decrepit, the king will naturally abandon me! Don't you understand such a simple thing? ”

Su Qin heard Xia Yingchun's answer and saw that she was angry, so he replied directly: "Don't be angry, princess! As you just said, King Qi can't pamper you forever, that's because as soon as you are old and decrepit, King Qi will abandon you! But if the princess can stay young forever, then why should the princess worry about this? ”

Xia Yingchun said with a mocking face: "Everyone will get old, from ancient times to the present, how can anyone stay young forever?" ”

Su Qin picked up the glass bottle on the plate and said to Xia Yingchun: "Before there was no 'holy water', it was indeed impossible to stay young forever. However, now with the 'holy water', eternal youth is no longer out of reach! ”

Hearing Su Qin's introduction to this 'holy water', saying that this kind of thing can keep young forever, Xia Yingchun looked skeptical.

The 'holy water' that Su Qin took out, which was claimed to be able to maintain his youth forever, was the ammunition that Dai Yan specially brought to Su Qin from Taoqiu to Linzi. It is really not something that Dai Yan used to fool Xia Yingchun, but a big killer that Dai Yan got from his later life experience - hyaluronic acid.

Hyaluronic acid, later known as hyaluronic acid, is an acidic mucopolysaccharide. This thing can be regarded as a big killer by Dai Yan, and it is definitely not for nothing. Hyaluronic acid is widely distributed in all parts of the human body, especially in the skin, which contains a large amount of hyaluronic acid. The maturation and aging process of human skin also changes with the content and metabolism of hyaluronic acid, which can improve the nutrient metabolism of the skin, make the skin soft, smooth, wrinkle-free, increase elasticity, prevent aging, and at the same time moisturize and is a good transdermal absorption promoter.

In short, as long as you have this thing, and insist on using it constantly, not to mention completely and eternally young, it is not difficult for a person to maintain the face of a person in his twenties when he is fifty or sixty years old!

In the era that Dai Yan traveled back to, it was this thing that propped up the world's huge medical beauty industry, which is something that can make women crazy! Dai Yan once heard a certain upright star say in person on TV in later life: Once a star leaves hyaluronic acid, he will not be able to survive!

Those who are over 35 years old, or even 50 or 60 years old, and still have skin like 20-year-olds, can be almost 100% sure that this person has definitely been injected with hyaluronic acid! And some celebrities who are over 40 years old and dare to show a beautiful "no makeup" are definitely just a few days after the injection of hyaluronic acid. Because although hyaluronic acid can be injected directly, it takes a few days for initial absorption, and it is effective for about half a year, and the first few days of absorption are the best time for cosmetic results.

When the effect is at its best, release "no makeup" to let people know how "natural beauty" they are, they can give others the greatest sense of amazement, and finally harvest the faith of a lot of fans!

Hyaluronic acid is so important, but its preparation is not a simple matter. Theoretically speaking, hyaluronic acid appears in various animal tissues, which can be prepared by the method of tissue extraction, that is, by making various hyaluronic acid-containing tissues into solutions, and then extracting, removing impurities and fractionating the hyaluronic acid in various solutions, so as to obtain practical products. Although this method is also extremely difficult, it is a feasible solution after all, and the only drawback is that the raw materials for making hyaluronic acid are too expensive. Therefore, the large-scale production of hyaluronic acid in later generations was made by microbial fermentation.

Dai Yan naturally has no way to master the preparation method of microbial fermentation, he can only prepare it through the tissue extraction method. Although hyaluronic acid is widely found in human and animal tissues, the content of hyaluronic acid in animal tissues is too low to meet the requirements for preparation. The raw materials with relatively high content are roughly chicken comb, baby umbilical cord and bull's eye vitreous. These three materials are not easy to obtain, which also causes the production cost of Taoqiu hyaluronic acid to become a sky-high price!

In the 20th century, even with the development of science and technology, the cost of tissue extraction method to extract hyaluronic acid exceeded $5,000 per kilogram. Nowadays, the cost of making hyaluronic acid from Taoqiu is basically still at the stage of laboratory preparation, and its cost is more than 10,000 gold and one kilogram!

Even with such a high cost, Dai Yan did not hesitate at all and spent a lot of financial resources to get it. Dai Yan can see very clearly how important this kind of good thing that can delay aging and keep people young forever is for harem concubines from all over the world today! Although the palace fights of harem concubines in various countries are full of tricks, in Dai Yan's opinion, the most important things they can rely on are nothing more than two things: face and family background.

This world, from ancient times to the present, and even to the future, is a world of faces. Otherwise, in the future, there would not be a situation where "Little Fresh Meat" and "Little Fairy" dominate the screen with no acting skills at all. Family background is the foreign aid of the concubines from various countries, and their own advantages are still concentrated in their faces. And the competition of faces is a relatively fair competition. After all, no matter how beautiful a concubine is, she can't be beautiful forever, she will always age.

And hyaluronic acid, which moisturizes the skin and delays facial aging, is simply a hang-up thing in the competition of concubines from all over the world! Which concubine can have this kind of thing, she will definitely be able to have an advantage in the future palace fight! And the competition of the harem is related to the struggle of the heirs of various countries. This kind of thing, if used well, is simply a kind of big killer that can "destroy the country and destroy the city"!

Xia Yingchun knows very well how important it is to her if there is really a holy water of "eternal youth", but does such a thing really have this effect? This kind of thing can't be like overseas immortal mountains and some ethereal immortals, right?

When she said her question, Su Qin replied without hesitation: "Don't worry, princess! If you don't believe in the usefulness of this thing, you can directly try it on others, if it doesn't work, you can directly refuse Cao Gong's proposal! ”

To be honest, Su Qin himself didn't believe that this magical thing named "holy water" by the lord had the effect of delaying people's aging and maintaining eternal youth. However, the lord clearly explained the effect of this thing, and he could guarantee to try it first, so Su Qin was relieved to boldly recommend it to Xia Yingchun.

Dai Yan knows very well that although the effective content of heavy hyaluronic acid in this hyaluronic acid solution extracted by the most primitive method may be less than 1%, it is indeed a truly effective thing, not a fake drug advertised on the street in later generations! The absorption of hyaluronic acid can see significant results in a week at most. Once Xia Yingchun confirms the magical effect of this thing, then she will never be able to do without this thing again!

The effect of hyaluronic acid is effective for up to half a year at a time, as long as she uses this thing and hopes to stay young forever in the future and be favored by King Qi, then she will never be able to do without it again. For Tao Qiu, the only one who can provide this magical item, Xia Yingchun will no longer have the ability to resist!

In fact, if you want to talk about moving summer and spring to lobby King Qi, the glass mirror plus some other things is completely enough. And Dai Yan deliberately added hyaluronic acid, a magical thing, not only to test the power of this thing in the harem of Qi and even the world. At the same time, he also hopes that through this thing, he can indirectly control Xia Yingchun and lay out the layout in the core of Qi State, a big country!