A body piercing the clouds and arrows, thousands of troops came to meet each other.

This sentence is used in Li Kuan's speech, although it is not very appropriate, but it is also quite vivid.

Around the three conjectures put forward by Li Kuan, whether it is Guanshishan Academy, Qujiang Academy and Chang'an Academy, even Guozijian and some Taoist priests are also preparing to carry out relevant research.

The first action of the School of Chemistry of Guanshishan Academy was to directly set up a "Procter & Gamble Chemistry Workshop".

In Li Kuan's view, the School of Chemistry needs to walk on two legs.

On the one hand, it is a purely theoretical research, which may not necessarily yield immediate benefits.

On the other hand, it is product-oriented research, through the study of the process of products, to improve everyone's understanding of chemical knowledge, to continuously improve the production process, so as to promote the development of the chemical industry.

"Master, the production of this toothpaste is actually very simple, will anyone buy it when the time comes?"

After Zhao Xiaoer entered Guanshishan Academy, he found an opportunity to worship Li Yan as his teacher.

Now I'm in the P&G chemical workshop, staring at the first product in the workshop.

"When did His Royal Highness the King of Chu miscalculate? People like you don't even care much about the quality of their own health, so how can they care about the quality of their teeth? ”

Li Yan looked at Zhao Xiaoer's mouth full of black teeth, and he was speechless.

"I used to have enough to eat, so I didn't have time to care about my teeth."

Zhao Xiaoer didn't care, anyway, he wasn't the only one with bad teeth.

"In Chang'an City, it's not like everyone who doesn't pursue like you. The materials used to make this toothpaste are very cheap, the process is not complicated, and the price is not particularly expensive. At that time, although it is unlikely to be as popular as alabaster in Chang'an City, it will definitely not sell badly. ”

Li Yan did not realize that toothpaste would become a rigid need for nobles and ordinary people in the future.

In his opinion, the choice of toothpaste for the first product of P&G's chemical workshop is actually a bit risky.

It is better to directly take the alabaster to produce and expand the scale, and the effect should be obvious.

"It's just a simple stone grinding into powder, and then adding a few things, I can't see anything special about this toothpaste."

"That's one of the reasons why you're my apprentice and I'm your master!"

……

Princess Gaoyang has been a little annoyed lately.

Her favorite food is sweets.

In the house, no matter what kind of dishes you make, you now like to put a handful of sugar in it.

For the Tang people, who lack sweetness, it is very luxurious to do this dish.

However, today's Fang family is not bad for money, and Fang Yiai has no opinion at all.

"Doctor Sun, what should I do with my teeth? It's been hurting for days. ”

In the medical hall affiliated to the Medical College of Guanshishan Academy, Fang Yiai personally accompanied Gao Yang to see his teeth.

According to Gao Yang's character, he naturally hoped that Lang Zhong would appear in front of him as soon as he gave an order.

But Sun Simiao is different, he can't be summoned by Gao Yang's words.

There was no way, Gao Yang had to obediently go to the infirmary to see his teeth.

"A toothache is not a disease, it hurts to be fatal. This tooth has been decayed, and no one can give any special solution except for daily maintenance. Or maybe you have pulled out these broken teeth yourself, and you will never suffer again. ”

Sun Simiao didn't make any difference just because Gao Yang was a princess.

In his opinion, all patients who appear in front of him are equal.

"What is the daily maintenance?"

Fang Yiai interjected on the side.

"Princess Gaoyang has a sweet tooth?"

Sun Simiao is about to become a dental professional during this time.

In Chang'an City, the number of people who came to him to see his teeth more than doubled compared to previous years.

Through analysis, these nobles with more tooth decay generally have a habit of eating sweets.

In the past, frosting was a rare item in the Tang Dynasty, although the nobles were not short of this money.

However, due to the high price of sugar, various sugar-related foods have become relatively rare, and a variety of sweets and desserts can be found everywhere.

As a result, people who are not short of money have to eat some sweets almost every day.

Princess Gaoyang is naturally no exception.

"Recently, the sugar workshop of the Chu Wangfu has a new candy called White Rabbit Milk Candy, and Gao Yang has to eat a handful almost every day. Sometimes, even before going to bed, you have to eat two to be satisfied. ”

Without waiting for Gao Yang to speak, Fang Yiai answered Sun Simiao's question.

"Then it's no wonder! Eating sugar is the most damaging to your teeth, especially before going to bed. The old man has encountered this situation many times. ”

Sun Simiao said strangely.

Tooth decay, in the current Chang'an City, is almost a disease of wealth.

Although the teeth of the poor people are not good, they are generally only yellow, ugly, and have fewer tooth decay.

But the rich and noble are different, like Gao Yang, it is not uncommon for several teeth to have tooth decay, especially in the past two years.

In order to solve the problem of dental treatment, Sun Simiao even opened a special dentistry in the medical school, arranging for students to study the treatment of dental diseases and the possibility of filling.

"That'...... Doctor Sun, what should I do in this situation? ”

Fang Yiai looked at Gao Yang, who was muttering and frowning, and didn't even want to say anything with a toothache, and looked at Sun Simiao with expectation.

"In this way, you can go to the pharmacy and buy some health pills, some of which are taken orally, and some of which are soaked in water for gargling, which have the effect of reducing inflammation and relieving pain; Then, the most important thing is that you get into the habit of brushing your teeth. ”

Sun Simiao thought of the toothpaste and toothbrush that had just been made by Procter & Gamble's chemical workshop, and couldn't help but sell it.

Although he used to have the habit of brushing his teeth.

However, the main use of wicker and salt water to brush teeth is not a level of experience at all compared to the toothpaste toothbrush launched by P&G Chemical.

Although this toothbrush and toothpaste are not particularly cheap, ordinary people may not be able to afford them.

But Princess Gaoyang's words must not be any problem.

In fact, the business of Procter & Gamble's chemical workshop was aimed at the noble and wealthy from the beginning.

After all, no matter how cheap toothbrushes and toothpaste are sold, many ordinary people are still reluctant to spend this money.

"Brush your teeth?"

Fang Yiai is not really stupid, so he naturally heard the brushing of his teeth in Sun Simiao's words, which seemed to be a little different from what he understood.

"That's right, the Procter & Gamble Chemistry Workshop under the School of Chemistry of Guanshishan Academy has produced the first toothbrush and toothpaste in Datang, which are specially born for everyone's oral cleaning. As long as you brush your teeth in the morning and before going to bed at night, the likelihood of tooth decay will be greatly reduced. Of course, it would be even better if you could brush your teeth every time you finish eating. ”

Sun Simiao spared no effort to promote toothpaste and toothbrushes there.