Tell all night. Zhao Xing and Mi Zhen did not move except for their mouths. But even so, after getting up the next day, the two of them were a little tired and tired.

Zhao Xing lazily came to the courtyard, took a bowl of water and some salt handed over by the maid Cui'er, frowned and began to clean his mouth. When some bitter salt was evenly smeared between his teeth, Zhao Xing couldn't help frowning, thinking that he had traveled back for more than ten years, and it was still difficult to adapt to the habit of the ancients to rinse their mouths with salt powder as brushing their teeth, whether they would find a way to make the toothbrush and toothpaste out, which would not only be convenient for himself and his family, but also more clean and healthy.

In the past, Zhao Xing was only busy practicing martial arts and fighting with others, and some seemingly simple ideas were too late to be put into action. Now that the big thing has been decided, when he rinsed his mouth, he suddenly moved the idea of invention and innovation, and for a moment he was stunned next to the sink in the courtyard for washing, looking at the ice skates that were frozen to wisps under the sink, and he was distracted for a long time.

Mi Zhen, who came out of the room, saw Zhao Xing stunned at the sink early in the morning, so she walked over and asked softly: "Husband, don't you think of something important? Do you want to call Dian Wei to come and arrange it?"

Zhao Xing was interrupted by Mi Zhen's thinking, so he turned his head and told her some of his ideas: "Does Madam feel that it is very troublesome to rinse your mouth, wash your clothes, clean your hair, and bathe on weekdays?"

was asked by Zhao Xing for such an unprovoked reason, Mi Zhen replied truthfully: "Since childhood, the slave family has used salt powder to rinse their mouths, sandalwood to smoke clothes, soap horn to clean their hair, and bathed in water, and they don't think there is any trouble." ”

Zhao Xing patted his head and said to himself: "Yes, people who have never used toothbrushes, toothpaste, laundry soap, shampoo, and shower gel naturally think that the method used now is the best." Hehe, then I'll start with the innovation of this life, and let the Han people open their eyes!"

After Zhao Xing finished speaking, he rushed out of the small courtyard where Mi Zhen lived, and went straight to his study, and he didn't know what kind of demon he had fallen, leaving Mi Zhen who didn't know what he was talking about: "toothbrush, toothpaste, ......" are some things.

After Zhao Xing entered the study, he took out a charcoal pen and a stack of white paper, and began to ponder while recording some nouns on the paper that only he could understand, such as soap, soap, shampoo, coal stove, washboard, bra, canned food, pillows, reading glasses, magnifying glasses, thermos flasks, bright tiles, toffee, ......

After Zhao Xing made a list of all kinds of items that he felt he could make or imitate with the current technology in this time and space, he found that there were hundreds of large and small items on a full page, and if he was alone, I am afraid it would be difficult to achieve it in three or five years.

So Zhao Xing called Dian Wei and asked him to bring Ma Jun, Hua Tuo, Zao Yi, Qin Yilu, Liu Jili, and several famous blacksmiths, carpenters, stonemasons, tailors and other craftsmen in Crouching Tiger City to all come over, and prepare to hold an "invention and creation coordination meeting" with everyone.

At noon, dozens of people from all walks of life in Crouching Tiger City who had received summons left their busy work and rushed to the Taifu Mansion in a hurry. Except for Ma Jun, Hua Tuo and others who often go in and out of Zhao Xing's mansion, the faces of other craftsmen in the market are full of excitement and curiosity. Although everyone didn't know what Master Taifu had told him to come over, everyone felt that it must be a good thing.

It's no wonder that everyone has the idea of these philistines, although everyone can settle in Crouching Tiger City, it means that they have been more or less awarded meritorious services, and some of them are even craftsmen who followed Zhao Xing in Crouching Tiger Village in the early days, but now they want to meet Master Taifu who lives in the same city, which is really rare. Like today's Zhao Xing, the scene of craftsmen from all walks of life has not appeared for many years, and the last time Zhao Xing convened everyone to set up a wood research and development team.

After everyone gathered, Zhao Xing came to the conference from the study with a thick stack of sketches, and began to divide labor and give on-site guidance and explanations according to the industries that various small inventions may involve.

Since the impulse to innovate was aroused from the time of brushing teeth, Zhao Xing was naturally the first to let everyone design toothbrushes and make toothpaste.

He took a diagram and began to compare with several big carpenters: "The name of this thing we made this time is called a toothbrush, it is about six inches long, one end is a hand-caught handle, and the other end is a brush head inlaid with fine bristles......

After several master carpenters fully understood Zhao Xing's intentions, he said to Hua Tuo: "Nowadays, the salt we use to clean our mouths is too simple, which is not conducive to removing the germs accumulated in our mouths at night. I would like to ask the divine doctor to prepare a few kinds of ointment-like tooth powder, and the specific recipe is as follows: mix honeysuckle juice, salt powder, and talcum powder to make a white paste-like object, mix mint powder with salt powder and starch to make a cyan paste, and use green tea powder, sugar, salt powder, and soaphorn powder ......"

Hua Tuo often discussed the problem of surgical treatment with Zhao Xing, and naturally understood the germs in Zhao Xing's mouth, and also knew what Zhao Xing's purpose was in making these various combinations of plaster, but he just asked with some confusion: "It is not difficult to mix these pastes, but it requires a large amount of salt powder and some other Chinese herbs, even if the combination can be successful, the cost must be not low, especially salt powder and sugar, which are very rare things in ordinary people's homes, Guochang has ever thought of the way out of toothpaste in the future?"

Zhao Xing then called Qin Yilu and explained to him: "You only need to provide all kinds of herbs, salt, sugar and other items according to the needs of the divine doctor, so as to ensure that the divine doctor can make toothpaste in a short period of time!" Qin Yilu did not ask Zhao Xing why, nodded and agreed.

After completing the task of toothbrush and toothpaste, Zhao Xing called a few more blacksmiths, and then took a sketch of a coal stove that could burn honeycomb coal, and began to compare with several blacksmiths. The production of this thing is not complicated, and there is no chemical reaction involved, so Zhao Xing took a short time to explain it to a few blacksmiths.

After talking about the idea of making a coal stove, Zhao Xing compared with a few blacksmiths how to make iron canned boxes, considering that vacuum compression packaging could not be achieved in this era, Zhao Xing decided to use the method of heating wax seal to isolate the air, so the task he taught the blacksmiths was to develop a thin iron sheet, which was easy to make canned boxes, and it didn't take long to say very clearly.

When a few tailors gathered in front of Zhao Xing, he took out a bra pattern with some twists, and then muttered to everyone according to his own, and after a while, several big tailors looked at Zhao Xing with strange eyes, but the look in their eyes clearly understood the purpose of the things that Zhao Xing needed them to make. By the time Zhao Xing next came up with a legend of briefs and a design that made it easy for women to change into intimate clothing when the monthly letter came, the faces of several masters had already shown very shocked expressions......

Zhao Xing didn't bother to explain to these big tailors, and after directly assigning the task, he called a few glazed stonemasons who specialize in producing monoculars for the military, and explained the task of designing binoculars, and then specially put forward the idea of using East China Sea crystal polishing to make magnifying glasses and reading glasses. These stonemasons are all skilled old craftsmen, and after listening to Zhao Xing's explanation, they compared to the sketch and thought for a moment, and then understood Zhao Xing's intentions.

According to Zhao Xing's idea, if the stonemasons can make binoculars, and then polish high-quality convex and concave lenses, then he can try to make an optical microscope for Hua Shenyi. Although the magnification is not necessarily high, it should be possible to study an onion slice or something. Zhao Xing vaguely remembered that the microscope brought to the podium by his junior high school nature teacher in his previous life did not seem to be dragging the tail that needed to be energized.

Zhao Xing thought that if Hua Tuo put on the reading glasses he designed, and then finally discovered something in the microscopic world through the optical microscope, that old face would be very exciting!