Abandoning concubines and raising children to seize the throne

Yin Qingxuan said with her hands behind her back: "This symbol is called Kesi, which represents an unknown number. This is the linear equation of one variable in mathematics."

"Kesi? Why is this name so weird?"

The old scholar looked puzzled.

Chang Helai also came over.

"That's right, I have never heard of this thing. Also, what exactly is the unknown?"

Yin Qingxuan immediately explained to everyone, found a few simple questions, and taught everyone to answer them using linear equations of one variable.

Although these people are not young, they are all the best in the country academically. It is obvious at a glance.

"I never thought that numerical problems could be solved like this."

"Yes, this is much simpler than hard calculation."

"It's wonderful. I didn't expect that Yin Xuezheng would have so much knowledge at such a young age. I am not as good as me."

Several old scholars nodded repeatedly, and Yin Qingxuan told them how to find the areas of various figures, as well as what positive and negative numbers, rational numbers, and quadratic equations are, etc. These are basic knowledge from primary school to junior high school.

As these old scholars would not be able to accept so much knowledge at once, Yin Qingxuan still focused on the linear equation of one variable and briefly touched on the rest, mainly to arouse their interest.

Then he took them to learn about physics mechanics, optics, electricity, and various material elements of chemistry. Several old students looked at each other, feeling that it was both profound and difficult to understand, and also found it unbelievable.

Take thunder and lightning for example. In their opinion, thunder and lightning are entirely the business of the Thunder God and the Lightning Mother.

Raining is a blessing from God, or the Dragon King is on the other side, but Yin Xuezheng said that everything is a natural phenomenon, which makes them confused.

Yin Qingxuan said with a smile: "Thunder God and Lightning Mother are all made-up characters by people and do not exist at all. Everything can be explained using academic methods. You will understand slowly."

A few people still didn't understand, and it was difficult to understand. It was as if a lifetime of faith collapsed in an instant, which made it difficult for them to believe.

Yin Qingxuan couldn't argue with them. After they learned more, they would naturally understand.

To avoid being troubled by these old scholars, Yin Qingxuan turned the topic to mathematics and told them about the benefits of learning mathematics and the emperor's intention to introduce this subject into the imperial examination.

A few people murmured and discussed, and they really felt that there were many benefits to learning mathematics well, especially in the Ministry of Industry, which often builds various things and requires a lot of calculations.

In the past, it was all done by rote calculation. It would be much simpler if we could bring in things like 'Kesi' and 'Wai'.

Mechanics and optics are also very interesting, but a few people are obviously not very interested in chemistry.

After all, the fun of chemistry lies in experiments. If the experiments cannot be completed, it will appear dry and without nutrition.

Yin Qingxuan could redeem the experimental items, but he had to take his time and his interest had to be mobilized bit by bit.

If you want to truly integrate these three subjects into the imperial examination, it will be a long and arduous task. Yin Qingxuan was mentally prepared before coming.

"That's it for today. The adults can just remember this first. I'll come back tomorrow after I get off the job."

Yin Qingxuan cupped her hands with a smile, said goodbye and left.

Several elders sent Yin Qingxuan out of the Imperial Academy, but their mood could not be calm for a long time.

"Are there really no gods in this world?"

"How is it possible? The ones who struck the thunder were clearly the Thunder God and the Lightning Mother?"

"That's right, I believe the rest. I really can't believe this."

"That's all. This Yin Xuezheng is young and energetic, and he might just be telling nonsense. Let's just pick out the good points and learn from him."

After Chang He finished speaking, several people nodded, and then discussed the linear equation of one variable.

Yin Qingxuan has already mounted his horse, and it is already past noon. If he goes back too late, Ye Jingyu will definitely have to lecture him again.

I originally wanted to visit Mrs. Liu, but since I didn't have enough time, I decided to forget it. We have a long time to go anyway.

Several people were preparing to return to the palace, when Yin Qingxuan suddenly saw a familiar figure on the opposite side, passing by and entering the most prosperous Tianjie in the capital.

She narrowed her eyes and immediately picked up the horse's belly and chased after him.

Qin Tian and Li Qi quickly followed.

"Your Majesty, what's wrong?"

Yin Qingxuan pointed forward.

"Quickly, catch that short and thin man."

While he was talking, the man had already turned into the brothel next to him.

Qin Tian immediately gestured to the air and immediately caught up with Yin Qingxuan.

"Do you know the owner of this brothel?"

Yin Qingxuan jumped off her horse at the door.

Li Qi smiled and said: "It doesn't matter whether you recognize him or not. We have a brand, and there is no one in Beijing that we are not afraid of."

Qin Tian whispered: "The secret guard has entered the brothel. No matter who Yin Xuezheng wants to find, he can't escape."

"Well, then go in."

Yin Qingxuan strode in, followed closely by Li Qi, holding the palace's golden belt in his hand.

The old madam was frightened and asked tremblingly: "Are these officials looking for a girl?"

Yin Qingxuan whispered: "I'm looking for the short man who came in just now. Where is he?"

The old bustard immediately pointed upstairs, the first room with the word "Tian".

Qin Tian immediately drew out his knife.

"Don't make any noise and take us there immediately."

The old madam nodded repeatedly, not knowing who the benefactor had offended, so he quickly led a few people upstairs and silently pointed to each room.

Yin Qingxuan came to the door and kicked it open.

A good-looking man inside was moving his hands up and down a woman's body, but he was short in stature and didn't match that handsome face.

Seeing Yin Qingxuan, the man's eyes were slightly startled, and he pretended to be calm and asked: "Who are these people?"

"Wang Shun, you still want to show off."

Yin Qingxuan walked over quickly and grabbed the man's face with a palm.

The man immediately did a backflip, came to the window, jumped up suddenly, and flew downwards.

However, there was no sound of landing, instead there was an ouch.

Yin Qingxuan looked down and saw Wang Shun being held in the hands of two tall men, struggling like a tortoise.

"Take the mask off his face."

Someone grabbed his chin and pulled off a mask.

The person inside is none other than Wang Shun, a disguised evil man with a wretched face.

Although Yin Qingxuan only met him once, she still had a deep memory of his figure.

He smiled coldly and said: "I didn't expect you are still in the capital, so take him back to the palace."

Wang Shun's martial arts skills were not very high, and he relied on his ability to disguise himself to travel around the world. Unexpectedly, he fell into Yin Qingxuan's hands today, and his face instantly turned green.

He struggled and shouted: "As long as you are willing to let me go, I can exchange a secret for you."