"Well?!"

Why don’t you need to poop? Why don’t you need urine?

When Zhao Qinghe heard this question, she was covered in black.

A little embarrassed and angry.

How can I ask such a question from a girl's home? It's too embarrassing.

He wanted to criticize this little guy, but when he saw his pure and innocent eyes, Zhao Qinghe forced herself to endure it again.

In fact, she was quite confused about this matter.

I don't even need to solve the hygiene problem.

All the food I ate and the water I drank seemed to have been absorbed, and no impurities were left behind.

Moreover, she has not gained weight even though she only enters and does not leave.

Well... it seemed like a little bit of it appeared when I was dreaming.

But that point is basically negligible.

There is also a woman's menstrual period, which is really strange.

She could only attribute it to the fact that after she traveled through time, her body had some unknown change.

But it should be a good thing.

However, these private issues about one's own body cannot be told to the primitive people.

"After all, it's not etiquette. Perhaps it's time to teach them words, etiquette, and shame."

Looking at the primitive people who were confused and curious, Zhao Qinghe thought for a while and said, "Don't explore this question, and don't ask again in the future. You have learned almost all languages ​​now. From today on, I will teach you words."

"Writing is a symbol of communication and a carrier of language, which can be used for recording, communication, etc., and has many uses."

"Let's start with the simplest numbers. Numbers are more widely used in life."

"For example, Zhao has a bowl, Wang has a bowl, Zhao gives the bowl to the king, then the king has two bowls, and Zhao has no bowls, so it can be said that there are zero bowls..."

Zhao Qinghe started the kindergarten teacher mode, took the pottery bowl as an example, and carefully explained the addition and subtraction of single digits.

He also wrote and painted on the ground with branches, teaching primitive people how to write numbers.

As for this magical knowledge, the primitive people felt novel and excited, and listened carefully to the lectures and learned.

Ah embarrassing!

Just as he was listening, Yan sneezed and two strings of snot flowed out.

"What's wrong? Do you feel uncomfortable?" Zhao Qinghe asked him with concern.

"The nose is itchy, and there is still water flowing out from it." Yan wiped his nose and said.

"Do you feel uncomfortable in your body? Are you sleepy?" Zhao Qinghe asked again.

"No, it feels pretty good." Yan replied.

"It should be an ordinary cold. I drink more hot water after I get home and go to bed early at night. It should be cured soon." Zhao Qinghe breathed a little relieved and reminded her again.

In the primitive era, the medical conditions were simple, and she had never studied medicine, and she did not know about traditional Chinese medicine and herbs, and she could not decoct herbs to cure diseases, but only had some simple medical protection knowledge.

When a primitive person gets sick, he can basically rely on his body to resist.

Fortunately, there were not so many messy viruses in the primitive era. These primitive people had good physical fitness and strong resistance. They even rarely had wind and cold infections, otherwise they would be really troublesome.

"You sit aside first and stay away from the others." Zhao Qinghe said to Yan.

"Why, Teacher Zhao?" Yan was a little confused.

"I'm afraid that the germs you exhaled will be transmitted to others and develop into influenza."

Zhao Qinghe explained.

After Yan, who seemed to understand, sat aside and stayed away from others, he continued to explain addition and subtraction.

...

In the following time, Zhao Qinghe would teach humans when she has time.

Arithmetic, pinyin, text, etiquette.

Especially etiquette, in the face of these primitive people who were not educated, Zhao Qinghe regarded this subject as a top priority and focused on teaching.

As she instilled over and over again, people gradually learned etiquette.

I have learned to respect teachers and respect the truth, respect my parents and elders, understand my character, be well-versed in shame, and know how to be reserved.

Women have also learned to be conservative and will not expose their bodies and skin casually outside.

During daily exercise, the sound is much smaller.

In addition to these, Zhao Qinghe has developed the sundial, the oldest timekeeping tool.

She divided the year, month and time, and divided the day into twenty-four hours, one hour into sixty minutes, and one minute into sixty seconds.

Thirty days or thirty days are one month, and twelve months are one year.

The year is divided into four seasons: spring, summer, autumn and winter.

She made a detailed calendar table. Although it was somewhat different from the calendar tables of the Earth and China, after all, she was not specialized in studying the calendar. Some subtle things were unclear, but they were basically the same.

Many traditional Chinese festivals have been copied.

New Year's Eve, Spring Festival, Lantern Festival, Qingming Festival, Zhongyuan, Mid-Autumn Festival, etc....

...

Time flies, and more than ten years have passed in a blink of an eye.

Zhao Qinghe has taught all the common sense she has learned to humans.

What remains are no longer what humans can understand.

More than ten years have passed, and the basic text, algorithms, etiquette, calendar, weights and measures have been mastered by humans.

Various technologies have also made great progress.

The breeding and planting technology is more sophisticated, research.

Nowadays, even if humans do not go out to hunt, they can only rely on breeding and cultivation, and they have enough meat and food to eat, and there is no shortage of food at all.

The technology of building houses has also made great breakthroughs. The wooden structure is stronger. The earth bricks are burned with flames and mixed with strong adhesion mud and sand to build houses with stone structures.

The fired ceramics are also more exquisite, not only with better quality, but also with colors and patterns.

In addition to being practical, it has also become a decoration for home.

In the fifth year, Zhao Qinghe discovered mulberry trees and silkworms from the depths of the jungle at the foot of the mountain.

After nearly two years of research, a simple textile machine was finally made, which can weave silk into cloth.

Since then, cloth has appeared.

Humans bid farewell to straw coats, put on cloth clothes, and also bid farewell to straw mats and quilts, and used a single cloth quilt.

In the eleventh year, humans discovered a special stone at the foot of the back mountain, with a blue-gray color.

After Zhao Qinghe's identification, this should be a bronze ore.

After heating and smelting, bronze was indeed refined.

Since then, humans have entered the Bronze Age from the Stone Pottery Age and their big crotch has entered the Bronze Age.

Bronze tripods, bronze swords, bronze pots, etc., all kinds of bronze ware have been made, and even agricultural tools have been replaced from stone tools to bronze ware.

At present, the technology mastered by humans is no less than that of the Shang and Zhou dynasties in the ancient Chinese period on Earth, and it is even far superior in some aspects, and it is not even comparable to that of the Ming and Qing dynasties.

There is a lot of knowledge that is taught by Zhao Qinghe, a modern person.

In addition to knowledge and technology, the population has also increased explosively.

In just twenty years, hundreds of new students have been added.
Chapter completed!