Chapter 20: Black Dragon's determination

　　 "This..." Bishop Cole frowned, put the white paper in the sunlight, and carefully looked at the "symbol" above.
　　 Bishop Cole shook his head and asked, "What is this?"
　　 "Number!" Serena smiled, "This is a number!"
　　People in this world have already found the law of addition, subtraction, multiplication and division. Square root, Pythagorean theorem, equations, etc. are often used in the construction of spell models.
　　 But unfortunately, the numbers in this world are still lagging behind, making calculations often cumbersome, whether it is financial or magical research.
　　 But things like numbers don’t mean that they can be changed. Just like modifying text and language, at least a generation of talents can change them.
Fortunately, most people in this world are illiterate and do not count, and it is not something weird that nobles do not count, it can only be said that his education is incomplete, or that he is obsessed with something, so there is no spare time Go learn arithmetic.
　　Because Cervantes will not count, and it is also difficult to count, the maid intends to bring'Arabic numerals' to this world.
　　 Human beings are all decimal creatures, unless there are extra fingers and toes, they will all be decimal.
　　 The main material plane has the same natural laws as the earth. Humans still have ten fingers, so the arithmetic method of humans in this world is still decimal.
　　 Bishop Cole was still confused, and the maid smiled and explained to him how to use these numbers. The old scholar suddenly realized, and then fell into contemplation.
Sitting on Serena’s face with a proud look on her face, she also learned this convenient number. Although Sister Serena said that she was just a
discoverer
rather than an
inventor
, she could This convenient number is a great achievement in itself.
　　After learning this kind of numbers, it is much more convenient for her to calculate the spell model and construct the spell model. It is like using [Prayer] to improve her intelligence.
　　 "Are you also an inventor this time?" Bishop Cole was so excited with red light that he rarely made a joke with the maid.
Serena shook her head with a smile and said, "No, I'm just a discoverer, not an inventor. I just discovered this number by accident. I don't know which age or which country's number. In short, this number It’s convenient, so I hope to popularize it."
　　 "Oh..." Bishop Cole nodded, "So, what is the price? What is the price this time?"
　　 "Tell them!" Serena pointed to the blank paper held in the hands of Bishop Cole. "The discoverer of this number is my Serena Wind of Sorrow."
　　 Bishop Cole frowned again and asked, "Is this the only way?"
　　 They paid so much before, this time...not right!
Bishop Kerr's eyes widened, panting, staring at Serena, and asked anxiously, "You have other knowledge in your hand? What on earth do you want to do?"
　　 The maid smiled mysteriously: "If I say, am I seeking God's place?"
　　 With this remark, not only was Bishop Cole, but even Edith, who wanted to join her but was struggling in her heart, was also frightened.
　　The blue muscles holding the handrail jumped, and Bishop Cole calmly asked, "What do you mean? Do you want to compete with my lord for the priesthood? Then why do you tell me?"
　　 Serena didn't answer, shook her head and asked, "I'm just kidding, why are you asking me these questions?"
　　 Bishop Cole fell into silence, and Serena pulled out the missing Etis.
　　 Bishop Cole looked at the back of the maid pulling the young aunt away, why did he ask her that? Isn't the answer obvious?
　　Because he thinks that this maidservant maidservant has this qualification!
　　No matter whether she has this thought or not, he must report this matter to the king of knowledge, which matters. Whether it is the number or the maidservant of this sad wind family may have great ambitions.
　　Slow Mendes, who hasn't changed for a long time, is going to make waves again?
　　The chief maid of the sad wind collar and sad wind family, is it a small stone or a huge stone...or is it a floating island? Will it be waves, tides, or tsunamis?
　　 Think about it is a bit scary.
　　…………
　　 Cervantes boredly played with the knife in his hand. The knife was constantly thrown up and caught, and it was almost boring to grow mushrooms.
　　 "Master Maid! Master Lord! Miss Edith!"
　　 The servants passing by were saluting to the three of them, and the maid was ranked at the front, which made Cervantes' mood a bit complicated.
But this is not a big deal for him, maybe he will forget it when he turns his head, but without the lovely gold coins, Cervantes couldn’t sleep well, the maid said it was'borrowing money', but when I don't know if I can.
　　He is aware of the fact that the sad wind leader is very short of money, but wasn’t this something happened some time ago? Why didn't the maid pay back the money?
　　Although I can sleep with a soft thing every night, the milky white, smooth skin is not as comfortable as a cute gold coin...
　　 "Hey!"
　　 Cervantes took the small bag, shook it, opened it, and suddenly became a husky.
　　 After a few months, Cervantes has more than two gold coins, which is great!
　　 "Ten gold coins, temporarily return you ten gold coins every month, and we will have more money later, this number will increase."
　　 Cervantes smiled stiffly on his face, "... Ha? Ten gold coins? Ten - isn't it good?"
　　 Cervantes turned his face to the side and looked at the maid with a sigh of relief before watching the maid's back rubbing her teeth.
　　Etis looked at him contemptuously, and then changed her adoring eyes, staring closely at the back of Sister Selena.
　　 ‘It’s so beautiful! 'Little aunt thought so.
Then, as always, Serena was handling government affairs, Edith was helping Serena dealing with government affairs, and Cervantes sat on the sofa happily playing with the eleven gold coins like a husky—and issued The sound is super annoying!
　　 Tuk Tuk!
　　Ittis was glaring at his brother who had no image at all, but heard the knock on the door and looked up. At this time Serena also raised her head and said, "Please come in!"
A young official pushed the door and walked in and found that the three princes, the maid, the eldest, and Miss Edith were all there. He bowed and saluted and said: "Maid the maid, the Kyle knight in Watch Town said he discovered the Black Forest. The change seems to be because the beasts have reproduced too much and need to consume the amount, so..."
　　 "Is the animal tide coming?" Edith squeezed the pen tightly. UU reading www.uukanshu.com
　　 The young official nodded and said, "According to Kyle Knight's judgment, I'm afraid it is."
　　 Serena bit her lower lip tightly, but this is the time...
Selena breathed a sigh of relief, looked at the young official, and said, "Let the nobles and the knights be prepared, our bottom line is still Overwatch Town. Although the old Duke is no longer here, but our Duke of Gale is still here. Believe Lord Duke! Go!"
　　 The young official glanced at Cervantes who was sitting next to him, nodded and said, "Yes, I will go!"
　　After the young official left, Serena's face was uncertain, and Edith also sat silently in her chair, the atmosphere was very depressed.
　　 "Servantes!"
　　 Serena smelled a face and called the name of the black dragon.
　　 Black Dragon tilted his head blankly.
　　 "Give me to repel the animal tide, no matter what method you use, you must repel the animal tide in one day!"
　　 The maid's tone was a little scary, even Cervantes didn't listen to how many times she spoke in this tone.
　　 However, he was still a little disapproving and didn't take things seriously.
"okay."
Hearing Cervantes' perfunctory reply, Serena added a sentence: "Now is the critical period for the development of the tragic leader. If you miss it, the tragic leader will not make any money, which means that you do not have It's money!"
　　 "I will definitely repel the animal tide in one day!" Cervantes growled like a chicken blood.
　　 The maid nodded with a smile, and Edith looked at her brother with hopeful eyes.
　　No matter how unreliable he is on weekdays, she hopes that he can lead the knight of the sad wind collar like his father, and once again guard this sad wind collar!