Xu Jingzong actually didn't say it, and Chen Ying knew that Xu Jingzong did not take Chen Ying's official position as the chief of the Martial Martial Palace seriously. He just did not make a living, and his reputation was ruined by the Fenglun family. He probably wouldn't be able to recover within three to five years. Only then did he plan to borrow Chen Ying's Chen family to study and accumulate fame.

If other methods were used, Chen Ying really didn't know how to impress Xu Jingzong, but if he used mathematics to calculate his bad luck, Chen Ying could completely abuse Xu Jingzong. Not to mention Xu Jingzong, even if he included everyone in this era, he would probably not be Chen Ying's opponent.

But Xu Jingzong didn't know that he knew that Chen Ying was extremely brave, good at commanding the army, good at poetry and calligraphy, and could be said to be both civil and military. However, he didn't know that Chen Ying was actually good at mathematics.

Xu Jingzong immediately made a decision: "If the Marquis wins, Jingzong will be a cattle and a horse for the Marquis for five years!"

Chen Ying smiled and said, "If Mr. wins, I will guarantee you a fifth-rank official!"

Xu Jingzong felt aroused and said excitedly: "Take it seriously!"

Chen Ying nodded and said, "Take it seriously!"

Xu Jingzong raised his right hand and said, "A gentleman's word!"

"Bang!" Chen Ying slapped Xu Jingzong and swore: "High horse and whip!"

Chen Ying wrote "12345678" on paper and suddenly found that Xu Jingzong did not recognize such Arabic numerals, so he rewritten them into 1,2345,678."

Of course, adding, subtracting, dividing, and dividing eight digits will be a bit tricky, even if you use a sixteen digit calculator, you can't calculate it. No one expected that Xu Jingzong would not show any weakness and wrote "95,417,826" directly

Chen Ying smiled, picked up the pen and recorded the number he had just written on the paper, then put down the pen and looked up, Xu Jingzong had already moved quickly to put on the grass stick and wrote the first line of the number on the white paper. Obviously, the addition had been calculated.

Xu Jingzong's calculation speed was beyond Chen Ying's expectations. Fortunately, mathematics was Chen Ying's strength. Although Xu Jingzong was fast, he was not slow either. Chen Ying wrote -83072148 casually, and then wrote 107763504 without any pause. Chen Ying looked up and found that Xu Jingzong's calculation speed was almost the same as him, but it was just a few breaths slower.

However, Chen Ying also knew that the calculation of addition and subtraction in ancient China was very convenient, but the rules of multiplication and division were relatively complicated (old Cheng would not).

Sure enough, as Chen Ying expected, when Chen Ying wrote down 1177995525256, cold sweat broke out on Xu Jingzong's head. When Chen Ying wrote down the division result, 0.1293854462791 Xu Jingzong directly threw away the calculation sheet.

"Xu admits defeat!"

Chen Ying said: "This is a big food number, which is very convenient for calculation!" So Chen Ying wrote down Arabic one to nine and one to nine respectively, and then used addition, subtraction, multiplication and division to perform vertical calculations.

At this time, Chen Ying was like teaching elementary school students, patiently teaching Xu Jingzong, and Lan'er listened carefully. In fact, Lan'er's mathematical foundation was even worse. Addition and subtraction within a thousand can be calculated, and addition and subtraction beyond ten thousand can be calculated. However, Lan'er was relatively smart and had a strong learning ability, which was much stronger than the acceptance ability of junior high school students in later generations.

Lan'er suddenly pointed to the "-" written by Chen Ying and asked, "What's the solution?"

Xu Jingzong said: "This should be a deficiency in Jiuzhe Arithmetic!"

Chen Ying nodded and said, "Mr. Xu is right. This "-" is a symbol used by the cannibals to indicate 'deduction' or 'deficiency', which is what Mr. Xu calls 'deficiency'!"

"Then this cross - a symbol that looks very similar to the Chinese cross - is probably a symbol that represents the meaning of "未" or "未" in the calculation of numbers in the Middle Earth?" Xu Jingzong said happily.

"It is—!" Chen Ying nodded: "This symbol is called 'plus', which means the symbol of 'full' or 'increase'; this character '1' is called 'minus' or 'negative'. It is minus, and it is minus loss, and loss is insufficient. Therefore, if a single big food number is added with such a word '-', it means 'loss' or 'how many are insufficient' in the Chinese text. This type of numbers with a negative sign before are collectively called 'negative numbers', and those numbers without such symbol before are called 'positive numbers'..."

Chen Ying looked at the future Tang Dynasty Prime Minister Xu Jingzong, who was respectful to himself like a primary school student, and Chen Ying felt so happy.

Chen Ying thought to himself: "If you don't go to Lingzhou to become the general manager of the military and horses, it would be better to open a math academy in Chang'an to teach math. At that time, the entire Tang Dynasty's Ministry of Revenue and the Ministry of Works are filled with their own students, and the entire world's accountants who settle accounts will take him as their teachers. This is also a very fulfilling thing.

However, what surprised Chen Ying was that Xu Jingzong suddenly knelt down respectfully at Chen Ying. When Chen Ying was caught off guard, Xu Jingzong had already kowtowed three times in a row. Not only did Chen Ying feel inexplicably wonderful, but even Lan'er felt incredible.

The Tang Dynasty's etiquette system was quite loose. Not to mention seeing Chen Ying, the superior, he didn't have to kowtow even if he saw the emperor.

Chen Ying stood there for a while, suddenly woke up like a dream, and quickly helped Xu Jingzong up and said, "Mr. Xu, you are..."

Xu Jingzong said: "Jingzong is willing to support the marquis's command!"

...

The political system of ancient China was actually very advanced even if it was placed in the whole world. Whether it was Western capitalist democratic politics or Chinese socialist mats, they were actually relatively democratic.

However, this relatively democratic political system had already formed a vicious feudal society in China as early as the Qin and Han Dynasties, which was actually relatively democratic.

When the country faces important things and the king encounters difficult things, the emperor will convene the three ministers and nine ministers and relevant officials to hold a meeting to discuss solutions, and the final decision will remain the ownership of the emperor.

The content of the court discussion was very wide, involving politics, economy, military, culture, etc. The number of people participating in the court discussion was determined by the negotiation office. There is a difference between court discussion and collective discussion. The emperor listened to politics in the palace, and all officials paid court meeting according to the rules. The emperor raised the matter verbally. The controversial discussion in the current dynasty is called court discussion.

Some things are not raised in court meetings, but officials who "review" within a certain range, such as "Nine Ministers Meetings", "Kings and Ministers Meetings", and then submit their opinions to the general discussions, which are called collective discussions. The court meetings or collective discussions are held to benefit the emperor's decision-making.

In fact, the Three Dukes and Nine Ministers are regular guests of the court meeting, and other officials are only present at the meeting when they are on the matter. In the Tang Dynasty, they are basically ministers of the three provinces and six ministries, and occasionally they will attend the meeting.

Let hundreds or thousands of officials from all over the world attend the court meeting every day, which is to perform TV. In fact, in most cases, court discussions are small circles.

The first time he was notified to attend the morning court, which surprised Chen Ying very much. Foreign-related military officers like Chen Ying basically had no chance to attend the court meeting at other times except for the qualifying meeting at the beginning of the year.

Chen Ying was also very nervous when attending the court meeting. He guessed that it might be related to Liu Wenjing's bulletin. At the same time, it also indicates that Chen Ying has entered the ranks of important officials of the country.

Finally, there are 24 hours of double monthly tickets, so I beg you to add to the book list.
Chapter completed!