"By the way, I have not calculated the things I have changed to that Hu Shang yet?" The bandit suppression matter was too anxious for a short time. Sima Ji asked about this transaction again, and it was enough to find something for him to do.

"It's still calculating, I believe I can get the account book in a short time." The two maids followed behind King Yan and said, "The number of items sold this time is very large, and the account will take some time."

"No! It's my negligence." Sima Ji stopped suddenly and said without a head and tail, "Let me find a few craftsmen to come over, and I'll need it now!"

"Yes!" Qiaoxi didn't ask why, and immediately bowed slightly and left.

This was indeed Sima Ji's negligence. He should have thought about how to solve this problem that involves a lot of calculations. However, it is better to be early than late, and it is not too late to think about it now.

Thinking about it this way, I felt full of déjà. When Sima Ji was still in Luoyang, he felt that something was missing when he was in contact with Hu Shang. Today, when he encountered similar things, he remembered that the less was abacus.

"Let the craftsmen wait first, and no one should come in and disturb me." Sima Ji ordered to several maids, "Get a few more goose feathers!"

Sima Ji remembered that when he was in elementary school, he once studied abacus classes for one semester. At that time, news often appeared, a prodigy from which country defeated the latest computers through the human brain.

Any tool must have a certain background. The abacus appeared during the Northern Song Dynasty, which can also prove that the Song Dynasty was indeed developed in commerce. Sima Ji, who held a ruler, first closed his eyes for a moment to recall. Then he started drawing, and the calculation beads were two or five, and the ten rows of calculation beads should be enough.

This is not complicated. After drawing, Sima Ji moved his fingers at the abacus on the paper. He did not relapse in mental illness, but was thinking about some basic methods of using it. After all, the abacus has been used for a long time, and he said ruthlessly, "I forgot this, didn't I be beaten by the teacher in vain!"

Half an hour later, Sima Ji took the Nine-Nine Mantra and the Mantra of Entry, and came out of the room with an abacus sketch. He saw the craftsman waiting at the door with sore legs. He handed over the sketch without much nonsense, "Get a batch for me, and after the coding, he sent it directly to Yan Yan and distributed it to all the industries under the royal palace."

Qiaoxi took another formula and looked at it again and again. Although she didn't quite understand what it was, she could feel it was very powerful.

"Your Highness's tool seems to increase the speed of arithmetic." Qiaoxi just admired her feelings, "Many vendors will thank you for your highness' tools."

"I have many things that I can't teach! I still have to rely on others to supplement them." Sima Ji was stunned for a moment and said in a pun, "If you have the chance, you have to learn more. Confucius said, "I will be my teacher when I go through three people. Print these formulas, which will be useful in the future."

Mathematics! This is really a big problem. This is not something that can be solved with just a few formulas. It is impossible to rely on a few formulas to expect mathematical progress. The country that boasted that ancient mathematics was powerful was the third brother who invented 0.

However, among many civilizations, mathematical systems focus on arithmetics. Including West Asia, South Asia and East Asia, there is no exception. Among many civilizations, the arithmetic systems are different from each other. However, when it comes to the records involving geometry, they dare not be blank, but the proportion occupied is very small, which is true.

It cannot be said that many civilizations have gone astray. Considering that people at that time, they generally choose to recalculate numbers.

Take the Pythagorean theorem as an example. The ancient Babylonians, who were about three thousand years BC, knew and applied the Pythagorean theorem, and they also calculated many Pythagorean arrays. In the first thousand BC, Shang Gao, a mathematician of the Zhou Dynasty, proposed Gou Three, Four, and String Five. At about the same time, Indian mathematicians also discovered this theorem.

However, none of these civilizations proved Pythagorean theorem. Geometry is in a long-ignored position among the mathematical systems of many civilizations. The only exception is the ancient Greeks, who were interested in unpragmatic geometry.

Among the pre-Qin schools, only famous scholars, Taoists and Mohists may study geometry in terms of their way of thinking and environment. Famous scholars emphasize the philosophical school that uses the form of thinking, laws and the relationship between name and reality as the research object, but famous scholars are not as good as Taoists. Mohists are famous, and even Taoists have become like this, let alone famous scholars.

Later generations mentioned ancient mathematics, and there were very few other civilizations. Ancient Greek mathematicians opened the list and cleared them.

"It is good and bad to get too far from the civilized concentration area. After finishing the work of the Jin Dynasty, you must go out and take a look. Maybe you can get the original geometry!" Sima Ji really hoped that he could make up for this gap, but unfortunately he had forgotten all the few geometry knowledge, because he really couldn't use it in life.

Geometry originally had a high sense of existence among various time travel novels, but it should still be in the hands of the Greeks.

Two crossbow arrows, Jijiu, swept across five meters with a whistling sound, one penetrated into the throat of a bandit, and the other shot through the back of another person's neck. Then many soldiers wearing armor emerged from the dense forest.

"Official Army!" A scream came from the mouth of a bandit, and the other bandits immediately fled. The Jin army was everywhere behind them, and they could not see at first sight.

In Yanshan, in the north, Li Shan and the royal palace guards followed the 5,000 Jin army and approached the bandit's nest. There were only more than 500 bandits. Sima Ji tried to force Xu Meng to get five,000 Jin army into the mountain. This is the standard use of killing chickens.

Most people think that it is a big deal, but Sima Ji doesn't think so. Doesn't I have to play a single-handed fight in front of the formation with the advantage of numbers? Isn't this a standard stupid one? King Yan never dislikes his opponent's weakness, just because he is afraid that his opponent is not weak enough.

In the afternoon, the Jin army who was searching the mountains in a net style had already surrounded the other party's old nest. Li Shan, holding a knife in his hand, shouted to the mountain village, "Listen to the bandits inside, we have 5,000 people. If you are not fools, surrender immediately. The King of Yan may be kind to spare you. If you resist stubbornly, Your Highness Yan has already said that things are dry in winter, don't blame us for setting fire to the mountain. Then you will die one by one with miserable faces."

"Brother, what should we do? The government army is going to set fire to the mountain." A small leader tilted his neck and looked at the leader's elder brother.
Chapter completed!