Eunuch Emperor

　　To test the distance of the moon, you can use the ancient Greeks' lunar eclipse plus triangle calculation method, of course, this calculation process is still very complicated.

　　 The first step is to prove that both the earth and the moon are round. This is not difficult.

　　 In the second step, find two deep wells perpendicular to the ground, two thousand miles apart in a straight line. Observe the angle difference between the sun's rays entering the two deep wells at the same time, because the angle of the sun's rays entering the two deep wells is different at different locations. Using this angle difference, the distance between the two places is two thousand miles, and then the circumference of the earth can be calculated by using the pi.

　　 The third step is to record the time from the beginning of the lunar eclipse to when it is completely covered, and the time from when the moon is completely covered to the full moon. Using the time difference between the two, calculate that the diameter of the moon is approximately one-3.5th of that of the earth.

　　 Finally, I found a copper coin aimed at the moon and waited for the copper coin to completely cover the moon. Measure that the distance between your eyes and the copper coin is 110 times the diameter of the coin. Then multiply the diameter of the moon by 110 times, and get that the distance between the moon and the earth is about 700,000 miles.

　　 Of course, the calculated result is not absolutely accurate, but it is enough to conquer Ning Zongwu. And the key is that you don’t need to use any new mathematical formulas, only the pi, and the world’s pi has already been calculated.

　　 It took the ancient Greeks several decades to roughly calculate the distance between the moon and the earth, but Du Bian only needed to take their decades of wisdom and turn them into a genius who shocked Ning Zongwu in a few minutes.

　　……

　　 The second question is still very, very difficult, especially for people in this world, it is simply disheartening.

　　 Because this problem needs to be solved with a three-dimensional quadratic equation system.

　　 It's a terrible thing. The mathematics achievements in this world are not much more advanced than the normal ancient Chinese. On the contrary, they are slightly backward. The ordinary elites’ ability to add, subtract, multiply and divide is already very remarkable. This Ning Zongwu unexpectedly gave a ternary quadratic equation problem. Are you trying to make people cry?

　　 But this is too simple for Du Bian, and it is completely effortless. After all, he is a former academic master and a master's degree from a prestigious university.

　　 The third question is a historical question, and it is a very partial historical question.

　　 The book in the "Book of Feng Chan" in the "Historical Records" reads: Twelve years after the first emperor was appointed to Zen, the Qin died, and all Confucian scholars burned poetry and books in Qin. So where did the king's sacrifice to heaven and earth begin? What's the proof?

　　 This question is definitely too bad, and it can stump most people!

　　 But it so happened that Du Bian also knew this question, and the answer was Zhou Gong Ji Dan. The evidence is in the "Zhou Gong and Shanhe Jianshu", Wang Wu suddenly changed his body, so he asked his younger brother Ji Dan to sacrifice to heaven and earth on his behalf. Only offering sacrifices to the heavens becomes the power possessed by the emperor or the successor of the emperor.

　　……

　　 These three extremely difficult questions were all solved by Du Bian relying on his own strength.

　　 But that's the end. He can't answer the last seven questions at all, especially the last three questions, which span the four major subjects of Profound Qi, Stars, Martial Arts, and Alchemy, which are more like a heavenly book to Du Bian.

　　 In other words, relying on Du Bian's own strength, he can only get 30 points. Although this score was great enough, there was still a huge gap between the 80 points requested by Ning Zongwu, so he still failed, unable to follow Ning Zongwu as a teacher, and was directly driven away.

　　 As an ancient person, Ning Zongwu unexpectedly asked ten such questions. This is not a schoolmaster, it is definitely an evildoer. His knowledge is too much ahead of the world.

　　 At this time, the old man in white in the dream reappeared, his face was unprecedented seriousness.

　　 "Ning Zongwu is a very important person. From him, he can unearth the deepest secrets of the world. This secret is related to your highest mission in this world."

　　 Suddenly, Du Bian made a mistake.

　　He just came to apprentice, using Ning Zongwu to improve his alchemy, martial arts, riding, etc. in the shortest time, and strive to get the first place in the graduation exam.

　　 As for the highest mission to travel to this world, he honestly doesn't care.

　　 "Of course, this matter is too far away for you now." The old man in white said: "So you don't have to deliberately dig out his secrets, you just need to be his most proud disciple."

　　 Du changed his way: "Ning Zongwu didn't want to accept me as a disciple, so he gave me ten extremely difficult questions. I tried my best to answer only three questions correctly, so he would definitely be driven away."

　　 Then, Du Bian put these ten questions in front of the old man in white and said, "There are seven questions left, can you help me answer them?"

　　 "No!" The old man in white in the dream said: "Everything depends on yourself!"

　　 Then, he said again: "However, I can show you a few books. The answers to these questions are in these books."

　　 "Good." Du changed.

　　 But the next second he was stunned, because the books that appeared in front of him were over a meter high.

　　This...How many **** books are these?

　　 For ordinary people, it takes at least several years to read these books intensively. Even if Du Bian has the golden finger of Dreamland, he can read one-tenth of it smartly.

"First, you completed the crazy gambling mission and got ten points of mental reward. So your brain power is stronger, and the ratio of dream time to real time will be greater, which means you can stay in dreams. Longer." The old man in white said: "Of course even so, you can't read all these books overnight. You can only read selectively. As for how much you can read, it depends entirely on your good fortune. ."

　　 After that, the old man in white immediately disappeared.

　　 Then, Du Bian entered an extremely difficult stage of hard study.

　　 It is not possible to finish reading these dozens of books. It is necessary to read selectively, to understand analogies, and to know how to think.

　　 He began to read hard, often after reading a few thousand words, he would enter into long thinking.

　　Because of the improvement of mental power, ten hours of reality is almost equivalent to half a month in dreams, but this time is still not enough.

　　In the dream, it took five days for Du Bian to find the answer to the fourth question in these books.

　　 It took another four days, and Du Bian found the answer to the fifth question.

　　 After another three days, Du Bian found the solution to the sixth question.

　　 After another three days, Du Bian found the solution to the seventh problem.

　　 The dream is about to end, and Du Bian can answer the seven questions. He needs to wake up from his dream soon, and the rooster outside has already crowed.

　　 Ning Zongwu asked for eighty points, but Du Bian could only complete seventy points, so if you go to the exam like this, you will still fail!

　　 I don't know if it was inspired by Jiu Tianyun, Du Bian turned to the last page of these books as quickly as possible.

　　 Then, he found that the correct answers to the ten questions were neatly written on it!

　　Really...Is there really a saying that Mommy sells 枀I don’t know it should be said?

　　 The routine of this old man in white is too deep, and he even tricked Du Bian into sleeplessly reading books for half a month. His brains were dry and his hair was white.

　　 also said that people must rely on themselves, and ended up putting the correct answer on the last page. Du Bian could even feel the malicious sneer of the old man in white.

　　 It was too late to think about it. Du Bian quickly wrote down the correct answers to these ten questions, over and over again. After ten times, I remembered that the points were not bad.

　　 At this time, the crowing of the rooster penetrated his ears, and Du Bian woke up.

　　 Three poles in the sun outside, Li Wenying said: "Breakfast has been prepared, but it is too late to eat, and I will be late in half an hour."

　　 Du Bian quickly got up to wash, grabbed a few buns and ran towards the Lotus Temple quickly.

　　……

　　 Twenty minutes later, Du Bian met Grandmaster Ning Zongwu. He didn't even let Du Bian enter the mountain gate, but directly asked Du Bian to take an apprenticeship exam on a stone table outside the Lotus Temple.

　　 "Ten questions, each question is 10 points, with a full score of 100." Ning Zongwu said: "If you exceed 80 points, you will stay as my apprentice, otherwise you will leave immediately. The exam will start at one hour!"

　　 Then, Ning Zongwu directly took out an hourglass and clasped it on the stone table to start the countdown.

　　 Ning Zongwu didn't want to say more, and didn't even want to look at Du Bian. Anyway, it is absolutely impossible for Dubian to pass the assessment. After the procedure is completed, people are driven away.

　　 This scene has a sense of sight. As a master, how can you tune in with Shirakawa? It's just that his martial arts and knowledge are more than a thousand times higher than Shirakawa.

　　 Li Wenying leaned forward to take a look, his face suddenly turned pale.

　　 What does Ning Zongwu mean? He didn't even mean to take over and become a disciple. What's the difference between this and direct rejection?

　　 These ten questions are completely difficult to reach the sky?

　　Who doesn't know that you Ning Zongwu once had an adventure, UU read www.uukanshu.com so that he became an all-round master. With regard to the ten questions you asked, how many people in the world can answer the eight questions correctly?

　　 Next, Li Wenying has no hope at all. Du Bian is a genius, but genius also needs a process of learning. These questions simply cannot be answered by a genius.

　　 Therefore, in Li Wenying's heart, he has already begun to think of another way to force Ning Zongwu to take over and become a disciple.

　　 And Ning Zongwu closed his eyes and sat beside him, waiting for an hour to run away.

　　……

　　 However, at this time, Du Bian was embarrassed with this difficult test paper. Should he take the test for 80 points or 100 points for the test? Or is it ninety points of the mean?

　　 Du Bian made a decision after only half a minute. Since becoming an eunuch, he has completely missed the middle ground. Is the Ten Common Servant of the Mean? Can they manipulate the emperor? Is the nine-thousand-year-old Wei Zhongxian the golden mean? But he beat the civil officer to kneel on the ground and shouted father.

　　 And what qualifications does a little **** have for a moderate and low-key? What kind of fame do you have, are you selected for the Juren or Jinshi? It's as ridiculous as if a poor person doesn't show off his wealth.

　　 So, Du Bian began to answer the questions in pens.

　　 One after another extremely difficult questions were answered in his pen, and every answer was even better than the standard answer.

　　 The prescribed answering time is one hour, but Du Bian took less than half an hour to complete it. This time, I don’t even need to check the answers, so I just put the pen away and said: "Grandmaster, I have finished the answer."

　　 He knows that there is no need to check the answer, it is an absolute perfect score!

　　……

　　Note: Please ask for a recommendation vote, we only need one hundred points, not afraid of being proud and not deducting points!