My son, Fusu, please abdicate the first emperor!

Chapter 190 I never judge others by their looks (please give me a monthly reward!)
The next day, Xianyang Palace, back hall of Shangshu Terrace.

A group of censors were sitting together, chatting.

They embraced the palace's food, wine, and food, and while drinking happily, they all talked about the strength of their family backgrounds.

"My niece married the son of Marquis Wu Cheng's younger brother. From then on, she became a member of the Marquis family. Do you know how much money we spent to facilitate this marriage?"

"Tell me."

Among these censors, the elders are in their sixties or seventies, and the youngest one is Zhang Cang.

At this moment, Zhang Cang was hiding in the corner and didn't want to come out.

"Six hundred gold."

"Six hundred gold, is this your niece's dowry?"

"Yes. If not, how could he be worthy of a nobleman like Wu Chenghou? In order to make up for the six hundred gold, my brother was running around. The whole family was almost wiped out." The person who spoke The person hides his face in a pretense, as if he is crying. "Well, my brother said that he is about to drink the northwest wind and come to join me. How can I, the elder brother, watch him live on the street?"

As soon as they heard that this man was really married to a relative of Wuchenghou's family, these people immediately put on flattering smiles on their faces, "You don't have to worry about this. If you can become an in-law with Wuchenghou, you can join the army and fight in the future. The children in the family can directly become Baijiang. If you want to enter the academy, with a letter of recommendation from Marquis Wu Cheng’s family, you have already entered the Imperial Academy!"

"When it is! When it is!"

"Come on, come on! Let's honor Yu Shilan as the first noble."

"Hey, such a trivial matter is nothing to worry about. How dare I bother you all to toast me."

"Yu Shi Lan is now married to Marquis Wu Cheng, and it will not be difficult for him to become a successful person in the future. Today he is Yu Shi, and he can join the court to discuss affairs and serve the king in the future."

Everyone was talking, and the wine baron touched them lightly.

Zhang Cang hid behind the curtain, curled up and hugged his body. He returned home in a hurry last night and vomited first. His wife patted his back and comforted him for a while before he recovered.

It's just that he has never understood what Zongzheng meant when he said, 'When the time comes, there is no slack, and the time will never come again.'

When he returned to the palace, he looked at the talented people who were bunched up in a pile and could not be reused, like tadpoles gathering in a small bay of a lake in spring, and listened to their discussions.

Zhang Cang realized it too late.

You only get one chance...

If I could not dislike other people's appearance, now I can be their guest.

"It's over, it's over."

Zhang Cang came to a water tank, stroked his beard against the smooth mirror-like water, and looked at the beautiful man in the mirror.

"I think I, Zhang Cang, have been born with a great appearance and a very handsome appearance. But I have never considered my good looks as an asset. But the world only looks at my appearance and ignores my inner self."

"But how could I, Zhang Cang, be the kind of person who judges others by my appearance? How could I use male lust to please others? This is not what a gentleman does. Now it's just a pity for this good head and the knowledge I have learned. Totally useless."

Zhang Cang tilted his head and talked to himself in front of the bronze mirror.

"Where is Yu Shi Cang?" The eunuchs in Yuyang Palace looked left and right at the Chancellor's desk, looking carefully everywhere, but Zhang Cang was nowhere to be seen.

Hearing this shout, Zhang Cang knew that the prince was here to make him happy again.

Prince Fusu was regarded by the people of Qin as the best prince in the world, but only he knew that he was simply a fool who loved to play with others and did not know how to use people.

I think back then, when I first entered the Qin Palace, I was favored by many big shots, but one day, a boy wearing black clothes suddenly came to me.

"Are you Zhang Cang?" The boy was arrogant, with his hands on his hips menacingly.

Zhang Cang was also young at that time, and he couldn't bear to see such a little thing standing in front of him, so naturally his tone became a little tougher, and he retorted confidently, "I am!"

"Looking at how handsome you are, I guess you know a lot of things. Come on, let's compare." Zhang Cang has seen arrogant people, but he has never seen such an arrogant villain.

"I, Zhang Cang, will not compete with a nameless child. Besides, I don't like to coax children either."

Zhang Cang waved his hand, unwilling to pay attention to this rude person.

"You kid, do you know who my father is?" This young man in black had his nostrils turned out and his sleeves were longer than his arms.

This was the first time Zhang Cang had seen such a arrogant person.

But he, Zhang Cang from Yangwu County, was Xun Qing's apprentice, a young and talented man who is rare in the world.

"Do you know who I am?" Zhang Cang came to this man and breathed at him through his own nostrils.

"There is no one in this world that I don't know." The boy raised his head, and the faces of the eunuchs behind him twitched and contorted. Zhang Cang gradually guessed who the arrogant and rude man in front of him, followed by two regular servants in black clothes and high hats, was. Who. "Let me ask you, six sixes is six, what is six sixes?"

Zhang Cang paused. Why did this kid ask different questions than ordinary people asked him? But it didn't bother him. Zhang Cang thought for a moment.

"210 six."

"Not bad." Ten-year-old Fusu laughed, showing his clean teeth.

This Zhang Cang is a very famous math master in Chinese history.

Together with Geng Shouchang, he continued to improve the theory on "Ten Books of Suanjing", a mathematical work that had long existed but whose author was lost, and left precious mathematical theories and ideas to future generations.

To develop industry and physics, mathematics must not be developed to the point where only one person in a hundred could understand and learn it in ancient times.

And Zhang Cang, he is the key.

In "Nine Chapters of Arithmetic", there is a relatively complete method for calculating fractions, including four operations, general division, reduction, and conversion of mixed numbers into improper fractions. Improper fractions were also called inner subdivisions by the ancients.The steps and methods are generally the same as those in modern times.

For the operations of adding and subtracting fractions, "Nine Chapters on Arithmetic" has clearly stated that the fractions should be combined first to make the denominators of the two fractions the same, and then the addition and subtraction can be performed.

After witnessing the popularity of the multiplication tables in the Qin State, and seeing mathematical and scientific works such as "Ten Books on Sutras", Fusu was naturally shocked.

He realized that in the pre-Qin era, the divergent theories of various schools of thought had laid the foundation for China's ideological and cultural origins, and mathematics had already led the world from the very beginning.

In times like this, why not seize the opportunity?

Zhang Cang remembered that the prince looked at him and giggled for a while in the sun. Then he picked up the sword attached to the guard and drew a triangle on the ground. He gave the lengths of the three sides, but asked himself to calculate the total area.

Zhang Cang has done some research on this method of calculating the area of ​​a triangle.Because most of the ancient fields were cut according to the terrain and edges, they were very irregular. Triangular acres were often encountered.

At this time, you must first measure the length of the three sides of the field according to the steps, and then calculate the area of ​​the triangle.

This situation is very common in reality, so the officials responsible for registering these acres of land are required to calculate these things.

However, the experience obtained from previous explorations can only calculate the area of ​​an isosceles triangle, but the prince drew a very irregular triangle.

Zhang Cang looked at the numbers marked on the triangle, seven, twelve, and thirteen.Who would do this.

Just like that, the prince of Qin used him to establish a reputation in arithmetic.

Fusu directly took out Helen's formula.

“The area of ​​this triangle is equal to the perimeter times half the perimeter times half the perimeter minus one side and then take the square root.”

"If you don't believe it, you can do the math."

(End of this chapter)