Wei Zheng was also happy to see the hunt, before he thought that in terms of numbers, he didn't dare to say that he was one of the best, at least he was quite accomplished. When www.biquge.info he was studying in the past, he had also visited several famous celebrities, although these people all had their own strengths, but none of them could be as powerful as Wang Mai. The very complex problems that he often thinks can be big and small in Wang Mai's hands, and the complex and simplified can be solved, just like solving the problem like a cow. Therefore, he even had the idea of worshipping Wang Wheat as a teacher and learning arithmetic from him.

"Why not? In the past, the Confucian saints also worshipped Lao Tzu as a teacher and learned weekly rituals from him. Today, I, Wei Zheng, am just a small official, although there is a huge age difference between you and me, but those who have learned without succession are respected, and it is also a beautiful talk to be passed on to the ears of others. In order to increase his persuasiveness, Wei Zheng even came up with the example of a saint apprenticeship, and he was more than ten years older than Wang Mai, but he was not afraid of the ridicule of others.

"Brother Xuancheng...... Old Wei, don't make fun of me anymore. Wang Mai smiled bitterly, "You are so shameless to ask, you are already very embarrassed." In addition to arithmetic, I don't know anything about literature, history, and a subset of history. The so-called hearing has a sequence, and there is a specialization in the art industry, I am just good at this aspect, and as for the apprenticeship, it is absolutely impossible. Anyway, if there's any problem, let's just discuss it with each other. Also, don't call me one by one, you are so much older than me, just call me by my name. Finally, under Wang Xiaomei's prevarication, Wei Zheng gave up the idea of apprenticeship.

"Jikai is too humble, I don't know if you just said, 'There is a precedence in hearing the Tao, and there is a specialization in the art industry' is not something ordinary people can say."

"I've also heard what people say, in short, don't mention the matter of apprenticeship again, you and I, work together to help and make progress together." Wang Mai's fork in the mouth spit out Han Yu's old man's famous words, and quickly changed the topic.

"By the way, Jikai, I wonder what you mean by the unknowns you just mentioned?"

"It is to assume that the unknown condition is known, and then extrapolate the unknown condition according to the existing condition." Wang Mai replied.

"How?" Wei Zheng looked dazed.

"Yesterday I told you all the symbols for addition, subtraction, multiplication, and division. For example, let's take the problem of chickens and rabbits in the same cage. If you apply the principle of this unknown, the solution is very simple. Wang Mai drew a triangle and a square on the paper, "This triangle represents the number of chickens, and this square represents the number of rabbits." Multiplying a triangle by two is the number of chicken legs, and multiplying a square by four is the number of rabbit legs, and the sum of these two equals the total number of known legs. The triangle and the square are added separately to get the total number of chickens and rabbits. If you look at the second equation, we can get the number relationship between triangles and squares, that is, the total number of chickens and rabbits minus triangles equals squares. And then we bring this relation back to the first equation by the second equation, and we get a new equation with only one unknown condition, and the number of chickens is solved......"

"Wonderful......" Zheng Changshi couldn't help but applaud and shouted. It turned out that the two of them were so involved just now that they didn't even notice Zheng Changshi pushing the door in.

"Zheng Changshi." The two hurriedly saluted.

"You don't have to be polite to join the army." Zheng Changshi waved his hand with a smile on his face, "Yesterday, I heard Duke Wei mention that Wang joined the army, but because the affairs in the palace were busy, I didn't have time to talk to Wang Senjun. Just now I pushed the door in, and saw that the two of them were very engrossed in arithmetic and couldn't bear to disturb them, but unexpectedly, Wang Senjun said every word, and the old man heard the wonders, and couldn't help himself, and disturbed the two. ”

"Zheng Changshi's words are serious, it was the two of us who were negligent for a while and failed to welcome Zheng Changshi's arrival, and I ask Zheng Changshi to understand." Wang Mai arched his hand and said. This Zheng Changshi, although nominally only a Wei Gongfu Changshi, if you regard the Wagang Army as a regime, Zheng Changshi's current status is no different from that of the prime minister, and he is also his own top boss. The top boss says a few kind words to you, but you must not take it seriously.

"I just listened to what the little officials below said, and the two soldiers completed the task of military rationing early this morning. The old man knew that both of them were arithmetic masters, but the short time spent on them was also greatly unexpected to me. As a rule of thumb, even for those who are very familiar with calculations, it takes at least two days. Zheng Changshi looked at the abacus on Wang Mai's table as he spoke. Sure enough, as Wang Mai expected, as soon as Zheng Changshi changed his words, he brought the topic to the right path, and it seemed that he was coming for the abacus.

"Zheng Changshi, please take a look!" Wang Mai picked up the abacus on the table and handed it over.

"Oh?" Zheng Changshi took the abacus and held it in his hand, "I don't know what this thing is for?" ”

"The name of this thing is: abacus, as the name suggests, is a tool used for calculation." Wang Mai replied.

"Abacus? Its shape is like a plate, used for calculation, good name. The old man had read that there was a record of abacus in ancient books, but he had never seen the real thing. May I ask Wang to join the army, is there any connection between the two? Zheng Changshi asked.

"Yesterday, Wei Senjun also said that there was a record of abacus in ancient books, but I really didn't know it. This abacus was inspired by my view of a businessman in the south of the Yangtze River who used bamboo sticks to string beads to count. Wang Mai had no choice but to use the set of words he had said to Wei Zheng yesterday on Zheng Changshi.

"Zheng Changshi, in fact, the subtlety of this thing does not lie in its body, but in the calculation formula that matches it." Wei Zheng explained on the side.

"Formulas?" Zheng Changshi looked at Wei Zheng, "I don't know if the old man, can I be lucky enough to see him?" ”

Wei Zheng turned around and picked up the piece of paper on the table yesterday that had written an operation formula and handed it to Zheng Changshi: "Zheng Changshi, please see, this formula covers four operations, which can be described as extremely exquisite. ”

"I just don't know how to match this mantra and abacus?" Zheng Changshi glanced at the mantra on the paper and asked.

Wei Zheng glanced at Wang Mai and motioned for him to demonstrate it for Zheng Changshi. Wang Mai shook his head and excused himself: "Brother Xuancheng, although this thing was made by me, but you were able to master it in only half an hour yesterday, and its calculation speed far exceeded that of Zaixia, so I won't be here to make a fool of myself." It's better to bother Brother Xuan Cheng to demonstrate it for Zheng Changshi. ”

When Wei Zheng heard this, he no longer shirked, he took the abacus in his hand and put it in his left hand, and his right hand quickly fiddled with the abacus, like the four methods of operation demonstrated by Zheng Changshi. In order to show the power of the abacus, very complex numbers are deliberately used. Zheng Changshi couldn't help but nod his head from the side, and praised again and again.

After Wei Zheng's demonstration was completed, Zheng Changshi took the abacus again and couldn't help but try it himself. Although he is old and does not have Wei Zheng's ability to memorize, he needs to glance at the mantra on the paper from time to time in the process of using it, but after calculating it once, he still feels that it is much faster than he usually uses the calculation chip.

"Good, this thing is wonderful, Wang joined the army really has a wonderful idea." The more Zheng Changshi looked at the abacus in his hand, the more he liked it. Especially when he is old, some numbers need to be recorded on a piece of paper from time to time to prevent forgetting, and sometimes he even needs to take out the calculation chips. With this abacus, he no longer has to worry about forgetting the numbers due to someone interrupting him in the middle of the calculation.

"Since Changshi loves this thing so much, I will give this thing to Changshi, and please don't dislike it." Where does Wang Mai not know the meaning of pushing the continent along the water, when will the boss's fart not be filmed at this time?

"How good is that? A gentleman cannot take the love of others. Zheng Changshi excused himself.

"In the next I have always admired Zheng Changshi is as honest as water, but this thing is just made of ordinary wood, and the process is not complicated. I have asked the carpenter who made this thing yesterday to make a few more, and it will be completed in a few days, so Changshi can just accept this thing with confidence. "How does Wang Mai know whether this Zheng Changshi is honest or not? It's just a matter of picking up good ones, and speaking of which, his homework to please leaders has improved a lot compared to his previous life.

"In this way, the old man will be disrespectful." The more Zheng Changshi looks at Wang Mai, the more pleasing it is, this young man is so old, he will definitely achieve extraordinary achievements in the future, "The old man must report this matter to Duke Wei, and promote this abacus in the whole army of Wagang, and Wang has made great contributions to joining the army." ”

"Thank you Zheng Changshi." A thousand words, Wang Mai is waiting for this sentence.

I don't know what Li Mi will reward himself? Money? Belle? Even if he is an official position, he doesn't plan to stay in Wagang for long anyway...... As soon as Zheng Changshi was sent away, Wang Mai couldn't wait to know what reward he could get.

"Follow-up...... Following the ......," Wei Zheng interrupted his thoughts.

"Brother Xuancheng, I'm really embarrassed, I was going to give you the abacus just now, but I think Changshi likes it, so I'll give it to him first. In two days, after the carpenter has brought the finished abacus, he will give you another one, and I hope you don't mind. Wang Mai looked at Wei Zheng apologetically.

"It's okay," Wei Zheng waved his hand, "let's continue to discuss the unknowns you just mentioned." "This guy is a math maniac.

Wang Mai's reward soon came, neither a beautiful woman nor a promotion, but doubled his monthly service, his salary changed from the usual money to two yuan, and Lu rice also doubled. Wang Mai was naturally overjoyed, although there was no expected beauty, but it was good to increase his salary.

Wei Zheng was a little upset for him, bluntly saying that abacus was a shocking initiative, and scolded Li Mi for not knowing the goods. Wang Mai just smiled, he knew that Wei Zheng's words also had his own grievances. Wei Zheng's experience is also very tortuous, in his early years, he was originally an official under the account of Cheng Yuan Treasure in Wuyang County, and later raised troops with Yuan Bao to respond to Wagang Li Mi. Li Mi learned that his article was well written, and specially summoned him, and he entered Wagang. I thought that Li Mi was a brilliant and strategic hero, and he could repay the loss here, but I didn't expect that Li Mi didn't take any of the ten strategies he gave to Li Mi at the beginning, and only regarded him as a secretary who drafted documents. Until the day he met Wang Mai, he offered Li Mi a plan again, and although Li Mi verbally agreed, he later changed his mind. Now he has been completely disappointed in Li Mi, and it can be said that this is the most disgraced period of his life.