Lin Yuan smiled: "Since we want to compete, then we have to make some bets, okay?" ”

Xiao Dezhang smiled: "Okay, you can tell me what we bet on, right?" ”

Lin Yuan smiled: "My bet is too big, do you dare to agree?" ”

Xiao Dezhang sneered: "Let's hear it." ”

Lin Yuan said with a smile: "If I win, I will be solely responsible for the land measurement and liquidation!" ”

Xiao Dezhang said: "What if you lose? ”

Lin Yuan said, "What do you want me to do?" ”

Xiao Dezhang said: "If you lose, you must no longer meddle in the affairs of the land of Gansu!" I also want to kowtow to me in public and apologize and compensate for our losses! ”

Lin Yuan asked: "I can understand not interfering in Gansu's affairs, but what is the reason for this kowtow and apologize?" ”

Xiaode said angrily: "You smashed the Longmen Pavilion and insulted the world's scholars, shouldn't you apologize to them?" I accept your apology on their behalf! ”

Lin Yuan nodded and said, "Okay, I promise you!" ”

Xiao Dezhang said: "Then let's say okay, you alone, the numbers measured and cleared are more accurate than the numbers made by so many of us, if you can't do it, you will lose!" ”

Lin Yuan smiled: "Of course, if I do it, you will lose!" After Lin Yuan finished speaking, he turned around and looked at the people in the hall behind him, and said loudly: "Please all the fathers and villagers to be a witness together!" ”

Xiao Dezhang said: "Okay, tomorrow at ten o'clock in the morning, Xianda Academy, let's have a good competition!" ”

Xiao Dezhang smiled slightly, and walked to the back hall, and Yuan Yulin on the side whispered: "My lord, Lin Yuan is scheming, could today's incident be a bureau carefully designed by Lin Yuan?" ”

Xiao Dezhang said with a smile: "Lord Yuan doesn't have to worry, no matter how powerful Lin Yuan is, he can't be better than so many people alone, and he has to measure the land himself, even if he has great ability, it is impossible to measure faster than so many people!" So Lin Yuan will definitely lose this bet! ”

Yuan Yulin was still a little uneasy, and looked back at Lu Fang, who smiled and said: "Don't worry, my ancestor is the disciple of Mei Wending, the first calendar master in the Kangxi period, and he is proficient in the way of mathematics, and Lin Yuan's method is impossible to be more accurate!" ”

Yuan Yulin's face softened slightly, and Lu Nan continued: "If you are still not at ease, my lord, let's make another evil move tomorrow!" Guaranteed to make Lin Yuan lose in a mess! ”

Yuan Yulin asked, "What evil trick?" ”

Lu Nan said with a smile: "Tomorrow we will not only compete with him, but also compete with him, Lin Yuan is only one person, tomorrow I will bring ten people, ten to him one, let's put more questions, I don't believe that Lin Yuan alone can be counted as faster than ten of us!" ”

Yuan Yulin showed a relieved smile at this time, and the next day, Xiao Dezhang, Yuan Yulin and Lu Fang came to Xianda Academy early with people, the spacious courtyard was crowded with ordinary people watching the excitement, Lu Fang asked ten of his subordinates to sit on the edge of the table, take out the abacus and other things to prepare, and then walked to Yuan Yulin and Xiao Dezhang and whispered: "Two adults, the subordinates have prepared everything, just wait for Lin Yuan to come and admit defeat!" ”

Xiao Dezhang smiled and nodded, nodded to an entourage, and asked, "What time is it?" ”

The attendant took out a brocade box from his bosom, opened it and looked at the watch inside, and said with a smile: "It's already nine fifty!" ”

Xiao Dezhang smiled disdainfully after hearing this: "It's all this time, Lin Yuan must not dare to come, what excuse do you think Lin Yuan will find?" ”

Everyone echoed on the side, and at this moment, I saw Lin Yuan walking in from outside with two entourages, Xiao Dezhang snorted coldly and said, "Lin Yuan really dares to come." ”

Lu Fang walked to Lin Yuan, stretched out his hand and pointed to the table next to him, and said with a smile: "Lord Lin, your table is over there." ”

Lin Yuan saw ten people sitting opposite at a glance, and asked in surprise, "Do you want to use ten people to compete with me?" ”

Lu Fang smiled: "Yesterday, you said that you can do it alone, Lord Lin won't be going to break his word, right?" ”

Lin Yuan smiled and said, "How come? Then he turned to one of his attendants and said, "Take out your things." Lu Fang then saw Lin Yuan's entourage open a leather bag, and then took out a black square box from it and handed it to Lin Yuan, Lu Fang asked in surprise, "What is this?" ”

Lin Yuan smiled while taking the square box: "You use an abacus, I also use an abacus, this is my abacus?" ”

Lu Fang asked in surprise, "Abacus?" How come there are no beads? ”

Lin Yuan smiled: "I'll open the box and have it." Lin Yuan lifted the box as he spoke, and Lu Fang was surprised to find that this square box turned out to be two pieces, and there were many small squares on the one below, and there was a symbol on each small square, and those symbols looked very similar to the letters used by the British! The square on top of it resembles a piece of black glass.

At this moment, Lu Fang saw Lin Yuan pressing on a small square, only to hear a "buzz" sound from the square box, the glass-like thing on it actually lit up, an image appeared, and the side of the box made a "whirring" sound, Lu Fang jumped back in fright, pointed to the square box and said, "It turned out to be alive?" ”

Lin Yuan smiled and straightened the laptop in his hand, and said with a smile: "Aren't we going to compete?" Is it better than that? ”

Lu Fang steadied his mind, cleared his throat, and said loudly to everyone in the audience: "I announce, the competition has begun, the first item, the two sides will explain the liquidation method!" ”

Lin Yuan thought to himself: "I didn't expect that the first item turned out to be a method of calculating the area, this thing may not be understood by the people in the audience, the reason why he wants to test this is probably to test my bottom line." At this moment, I saw Lu Fang waving his hand to one of his subordinates and said, "Let people bring the blackboard up." ”

Then the two subordinates brought up a blackboard and stood in the courtyard, Lin Yuan thought to himself: "Is there a blackboard and chalk in China in this era?" ”

At this time, I only heard Lu Fang say: "This blackboard was bought from Westerners, and the words written on it can be erased, so I will first explain our solution method, which should be a brick and a jade!" ”

After Lu Fang finished speaking, he picked up a piece of chalk, drew an unequal quadrilateral on the blackboard, and then pointed to it and smiled: "Now we know the length of the four sides, but then we can't figure out how big this square is!" Do you know what this is for? ”

Lu Fang's voice was very loud, and everyone in the audience was attracted to him, looking at him curiously, Lu Fang said to one of his subordinates: "Bring things up!" Everyone stared at Lu Fang's subordinates curiously, only to see Lu Fang's subordinates walking over with a quadrangular wooden frame, Lu Fang took the wooden frame, pulled it with his hand, and said with a smile: "Did you see it?" This wooden box can be reshaped at will, so the size is not fixed! ”

Lu Fang pointed back to the quadrilateral on the blackboard and said, "This quadrilateral is not moving, what is it for?" Lu Fang said and pointed to the angle between the two sides and said, "Because this angle is fixed, this quadrilateral will not move." ”

Lu Fang pulled out his chest when he said this, and said: "Other people's measurement methods can't measure this angle, but we can, this is our cleverness!" After measuring the angle, we can solve the area of the shape, as for how to solve it. ”

Lu Fang asked Lin Yuan with a smile: "Lord Lin, I don't know if you will do it?" ”