Lin Luo looked up and was stunned for a moment, then patted his head and understood, and hurriedly said, "Master, don't worry. Pen ~ fun ~ Pavilion www.biquge.info heard to explain to you. After that, he took the arithmetic paper and quickly wrote down a string of answers under the strange characters next to the results of each arithmetic.

The old builder watched Lin Luo write down the answers, quickly calculated and checked two questions in his heart, and found that it was indeed the correct result.

Lin Luo quickly wrote on all the calculated calculation papers again, and the old builder did not speak, but took all Lin Luo's calculation papers, sat down and reviewed them silently.

After about an hour, the old master finished reviewing all the calculations that Lin Luo had calculated, and all of them were correct! The old master was very shocked in his heart, he entered the wall of the master with his master at the age of thirteen, and worked for most of his life, this arithmetic skill should not be underestimated! But the kid in front of him was only a teenager, and his calculation speed was more than twice as fast as his own!

Thinking of the number of circles he had memorized earlier, there were so many of them that he had never heard any arithmetic scholar talk about.

The old builder pushed the calculation paper in front of Lin Luo, and said very sincerely: "Boy, forgive the old man for being stupid, can you tell the truth the secret in these symbols?"

Uh, Lin Luo scratched his head, what big secret could there be in this?

It's just "0123456789" Arabic numerals and some mathematical symbols like xyz.

The characters of this world are very similar to the language of the original world, they are all complex hieroglyphs, with complex strokes and far-reaching meanings, which are a little more troublesome and less efficient to use for mathematical calculations.

Lin Luo is naturally accustomed to using Arabic numerals as calculations, but he can't tell the old master the true origin of this mathematical system.

Lin Luo sorted out the memories of this world in his mind a little, and made it up: "Teacher, there was once an ascetic monk from a distant territory in the villain's house. When my father saw that he was not very human, he left him in the house for half a year. This set of arithmetic symbols was passed down by this ascetic. ”

Lin Luo pointed to these symbols and explained them to the old master one by one the meanings corresponding to the various languages and symbols in this world.

The old master listened very attentively, nodded constantly, and sighed in his mouth: "Wonderful, wonderful." So concise, and so subtle to outline its original meaning, what was originally complicated, can now be referred to by a few symbols, no wonder it can be calculated so quickly and accurately. The old man opened his eyes today!"

The old builder praised two sentences and said no more, and ordered Lin Luo to continue the calculation, while he buried his head in writing the calculations, but a thought arose in his heart, and silently wrote down a few calculations that had nothing to do with the construction of the arrow tower, and handed them to Lin Luo.

Lin Luo did not doubt it, and used his brains to solve the problem, if he can get the appreciation of the old master now, he does not expect him to teach him the construction school, as long as he can help him get out of trouble. There were a few of the questions that were really difficult, Lin Luo scratched his ears and cheeks, and even used the advanced mathematics knowledge he learned in college, racking his brains to finally do it.

The old builder looked at the paper, his hands trembled and his heart jumped, and he pointed to one of the calculations and asked, "Can you solve this equation?"

Lin Luo looked at it, it was the two problems that he thought were a little difficult, and he had thought about it for a long time before he used the calculus knowledge of advanced mathematics to solve them. Lin Luo had to push it on the non-existent ascetic: "I can probably know a thing or two, the senior monk spoke in great detail back then, but he was too young and very naughty at the time, and he didn't listen to it well, and he didn't remember it very well in some places." ”

The old master sighed: "As you said, this eminent monk is really a great talent in arithmetic! Where is your house? After this incident, the old man will definitely go to visit him." ”

Lin Luo smiled bitterly: "The villain's family was victimized by the traitor, and the family has already been ruined and trapped here, so I really don't know the whereabouts of this monk." ”

Only then did the old master remember that this person in front of him was a hard labor who was assigned to serve in the army, and if there was no change in the family, he would naturally not end up in such a field, and asked: "Do you know who this master's surname is?"

Lin Luo frowned and thought for a while: "The senior monk is not a native of the country, and his name is very complicated, and I vaguely remember that it is called Newton ......."

The old master sighed convincingly: "It turned out to be Master Newton. "I thought that he was indeed a hermit master, although he had never heard of such a master of arithmetic, but his algorithm was so profound.

If you can learn this set of algorithms, not only can you go to the next level in your own construction skills, but I am afraid that the master will have a chance to complete it!

Although the old builder's mind moved, he no longer spoke, but beckoned Lin Luo to continue to work.

In the process of calculation, the old architect asked Lin Luo from time to time for this new algorithm, Lin Luo did not hide his selfishness, knew everything and said everything, the two of them calculated day and night for more than a month, and finally completed all the calculation work. If it weren't for Lin Luo's help, this calculation project would probably take three months to complete, but now it is much ahead of schedule.

The old builder took a stack of stacks of arithmetic paper and looked through it repeatedly, and said with a rare smile: "Very good." Now it's a lot ahead of its time. I'll give you a day off, and you'll start building when you come back!"

It was rare to have free time in the sky, so Lin Luo went to visit Xu Da, who was still in the hard labor camp.

Seeing Lin Luo's arrival, Xu Da actually cried with joy: "Young master, are you okay these days? There has been no news from you for more than a month, and the old servant is very worried!"

Seeing that Uncle Da was very worried about himself, Lin Luo smiled and said, "Don't you think I'm good." Is everything going well on your end?"

Uncle Da said: "Now that the quarrying work has ended, it is much easier to go to the forest outside the city to cut wood, which is much easier than quarrying." ”

Lin Luo worried: "Isn't there often fierce beasts in the forest?

Uncle Da waved his hand and said: "It's okay, this vast sea of trees will only be dangerous if you go deep into it, but the periphery is quite safe, and occasionally there are foot merchants passing by." As long as you don't have bad luck and step on poisonous snakes and the like. ”

Lin Luo nodded, and quietly stuffed Uncle Da with a small bag of copper coins and said, "You can collect these coins and silver first, and give a few to the Huotou Army a little, so that he can take more care of you when he puts him on the meal." ”

This is the monthly silver issued by Lin Luo as an assistant to the builder, and he naturally wants to give it to Uncle Da to improve his life.

Seeing that there were people around, Uncle Da was inconvenient to refuse, so he stuffed it into his arms.

Although he had seen the old builder's method of drawing scrolls out of thin air, Lin Luo still had no clue how to build this arrow tower.

The old builder didn't have any explanation for this, let alone when the builder was ready.

Large stones, wood, and other materials have been piled up under the cliff in order.

At this time, Lin Luo stood on the edge of the cliff and held the winch, and the old builder personally hung the rope and fell down the cliff.

The old builder had a large gourd hanging from his waist, and inside it was a vermilion ink-like liquid made from various unknown materials.

The old builder dipped his fingers in the liquid and wrote and drew on the mountain wall.

Lin Luo guessed that this was drawing some kind of architectural structure drawing, but then he denied this idea, even if the construction drawings were drawn on this cliff, it was impossible for anyone to build something on the cliff under such conditions.

Standing at the foot of the cliff and looking up, you can't see any patterns carved on the mountain wall.

After painting like this for more than a month, the old builder stopped depicting.

Now that half of the entire construction period has passed, the shadow of the entire arrow tower is still not visible, and the general does not send people to urge, so he is left to the old master to do it at will.

After fasting and bathing for three days, when the day was still in the morning, the old master led Lin Luo to the top of the cliff again.

Lin Luo couldn't hold back any longer and asked, "Master, when will this arrow tower be built?"

The old master just smiled and didn't say anything.

When he came to the edge of the cliff, the old builder explained: "I will retreat here to build a tower for as little as two months." I have opened the valley, you need to live here and take care of it, don't let the birds, birds and beasts come and destroy my flesh!"

So he sat down on the edge of the cliff and meditated.

Lin Luo was full of doubts, and suddenly felt a tremor under his feet, the ground under his feet seemed to be a living creature, and he had woken up!

Bursts of strange energy surged out from the mountain wall, and Lin Luo cautiously lay on the edge of the cliff and looked down, and was suddenly stunned!