When she got home, Xi Yuexin ignored Fang's scolding and went directly into the room to tinker with her tooth powder.

With Xi Baolin, the father who loves his daughter, Xi Yuexin doesn't have to worry about the Fang clan breaking in and sabotage.

The next day, the family used the tooth powder prepared by Xi Yuexin.

"Xinxin, this tooth powder is really good, not only can you clean the toothbrush, but also have a refreshing and cool feeling, by the way, didn't you buy pepper? Why isn't this tooth powder spicy at all? Xi Baolin first affirmed the efficacy of tooth powder, and then asked puzzledly.

"Dad, the amount of pepper is less than that of mint, so that the taste of pepper is masked by mint, by the way, Dad, don't you feel that I have added something else besides mint and pepper?" Xi Yuexin explained with a smile, and finally raised her own questions.

Although she only bought mint and pepper, there was an ingredient for tooth powder that was already available at home, so she didn't buy it, thinking that she would buy it after the trial was successful and she would make money by selling the tooth powder, after all, although this ingredient can be used in ordinary times, it is very expensive in this world.

"What's that?" Hearing Xi Yuexin say that there were other things added to the tooth powder, Xi Baolin asked curiously.

"Salt." Xi Yuexin didn't sell it, and replied with a smile.

"What? You also used salt, you lazy and ruined thing, see if I don't kill you today. When Fang Shi heard Xi Yuexin's answer, he immediately became angry, that salt is a lot of precious things, she is usually reluctant to use it for stir-frying, but this delicious and lazy product is used to make tooth powder, such a loser is simply intolerable.

"Grandma, I've only used a little bit." For Fang's superb and slashing temperament, Xi Yuexin was speechless,

"Do you know how expensive salt is? You use it to make tooth powder, what do you use to stir-fry vegetables at home? Even if it was only used a little bit, Fang felt that his heart was dripping blood, although it was only coarse salt, but it would cost thirteen wen and one catty.

"Uh, how much is a pound?" She really doesn't know much about the price of salt in this world, and even the original owner doesn't know about the price of salt.

"Thirteen texts for coarse salt and twenty-five texts for fine salt."

"Drink, so expensive?" Hearing the price quoted by the Fang clan, Xi Yuexin exclaimed.

In this way, it seemed that she was really wasting, and it was no wonder that Fang Clan was so angry.

But if the tooth powder is not salted, the effect is not so good, and for a while, Xi Yuexin was stumped.

If the effect is not good, there will be no repeat customers, thinking about it, Xi Yuexin feels that this salt must be put in, coarse salt is expensive, but grinding into powder, it will also reduce the cost accordingly.

"Grandma, I know, in the future, I will use salt to make tooth powder, so I will buy it myself, and I will not use the salt at home again." There is still some coarse salt left in her room, and when the tooth powder is sold, she will take the money to buy it herself, it seems that the price of this tooth powder is a little higher, or a small packet, so that the guests can use it faster, and the frequency of buying will be high, and the small profit can only be oversold.

"What, you still have to make tooth powder with salt?" No matter who paid for the salt, the Fang clan would have a heartache, it was the money, not the stones on the side of the road.

"Well, this is not less, less is to deceive customers, we must do business with credibility." Xi Yue nodded heavily and replied.

Seeing Xi Yuexin's insistence, Fang's family was even more angry and wanted to beat her, but his son was on the side, so he could only point to Xi Yuexin and said angrily to Xi Baolin: "You heard it, I didn't wronged her." ”