"Finish, listen all!" Li Muyun crossed his legs and raised his legs, almost the same as the storyteller in the West City. He knocked on the table: "It means that Xiao Ming's walking speed is twenty miles per hour, and a dog raised by Xiao Ming ran twice as fast as his. On that day, Xiao Ming went to school, and his dog followed him. Every time he ran to him, he would turn around and run home, repeating this. Question: How long did Xiao Ming run when he arrived at school one and a half hours later?"

What is this called a question? The following group of Imperial College students were stunned when asked!

Someone shouted, "Sir, what's the problem with you? Is Xiao Ming crazy or the dog crazy? Why are you running back and forth without any trouble?"

"I'm asking you to calculate how many paths a dog runs, not to tell you whether Xiao Ming is crazy or the dog is crazy or I am crazy! In short, this is today's homework. I need to know the answer tomorrow morning, but I can't calculate it. All your 'counterfeiting' this year have failed."

Students don’t know what they failed the subject, but they don’t sound good, probably they just fail. This is the first time that students have experienced what it means to meet soldiers. It’s hard to explain.

Of course, this is also the first time they have met a teacher who would assign homework so domineeringly. No, it should be said that it is barbaric. If the barbaric teaching method is difficult for students to accept.

So after class, a student immediately found the Shanzhu of the Imperial Academy again, denounced Li Muyun's inhumane teaching methods, hoping that the school could expel him from the teaching staff.

But what disappointed the students was that the mountain chief still said nothing. He just gave them a few words and sent them out. Then he held his head full of gray hair and began to think about the problem between Xiao Ming and the dog.

As for Li Muyun, who arranged such abnormal homework, he returned home leisurely. He had to go to the construction site to supervise the worker in the afternoon. Otherwise, God would know what those bastards could build the palace walls of the palace. If the repairs were not done, wouldn't they lose their heads?

And just as he was watching the beauty all over the street and measuring the busts of a group of ladies with admiring eyes, he kept following his little girl Mu Yu pulled his clothes: "Young Master, has Xiao Ming's dog run sixty miles?"

"Hmm? How did you calculate it?" Li Muyun stopped and turned his head in surprise.

"Difficult, are you wrong?" The little girl was a little confused. She was stared at by Li Muyun and was almost about to cry.

Li Muyun suddenly showed a big smile: "That's right, that's right. Xiao Ming walked thirty miles in one and a half hours, and then the puppy's speed was twice that of his, so he naturally ran 60 miles."

"I'm really right?" the little girl shouted in surprise.

"By the way!" Li Muyun nodded seriously.

In fact, this kind of problem can only be regarded as a brain teaser at best. As long as you turn around, it is a very simple multiplication problem.

But if you can't turn that corner, you're embarrassed. Even if you count it for a lifetime, you probably won't be able to calculate it clearly.

However, it was precisely because of this that Li Muyun discovered that the little girl who was following him was so smart. She knew that considering the problem from the overall perspective was much better than the students in the Imperial Academy.

...

Li Shimin sent Li Muyun to the Imperial Academy naturally would not be relieved. It was certain that he arranged for people to investigate the situation. So shortly after someone arrived home, the Emperor of the Tang Dynasty also received a report from his subordinates.

"What did you say? Calculate how many distances the dog has traveled? What a bullshit question!" After hearing his subordinates' reply, Li Shimin's first reaction was to use a whip to slap people.

"Your Majesty, this is the question Li Muyun asked!" The subordinates who were sent to the Imperial Academy were also confused, thinking that this problem was not caused by me. Why are you angry with me? You want to ask Li Muyun to go out.

"Yeah!" Li Shimin seemed to realize that he should not take his anger on others, and snorted and continued: "You just said that Li Muyun was not serious in class? She slept in class?"

"Yes, Your Majesty, I think he did it on purpose and wanted the Imperial Academy to expel him, and then he could resist the order with confidence."

Of course, Li Shimin knew what a bastard really thought, waved his hand and said, "You don't need to say this. I know very well. Just talk about what he has done."

"No!" his subordinate replied, thinking for a while, finally shook his head and said, "Your Majesty, there is nothing more. Then Li Muyun only sleeps and sleeps, and seems to have no intention of teaching those students."

"Okay, you go down first and always pay attention to his movements in the Imperial Academy." Li Shimin lowered his head and thought about it, sent his subordinates out, and then looked at the eunuchs beside him: "Go and tell me about this question to several princes over ten years old, oh by the way, there are Changle and the others, let them calculate it."

"No!" The eunuch responded and turned away, but he looked a little staggering, probably thinking about the result of this question in secret.

As we said before, this is actually a simple brain teaser, and it is not complicated. As long as you master the rules or your brain responds faster, you can basically answer it immediately.

But people are often limited by their own thinking. Most people will consider how many times the puppy travels between Xiao Ming and Xiao Ming's houses after hearing this question from Li Muyun, and how far they travel each time.

Some people even think about whether Xiao Ming followed him or her at home when he started walking from home. If he was at home, he would run less. If he was following Xiao Ming, he would go for another trip.

As long as your thinking falls into such a vicious circle, you will naturally not consider that the time when the puppy runs is actually the same as when Xiao Ming walks, that is, just multiply the speed by the time.

Of course, according to the ideas of some old scholars, there are actually other doubts about Li Muyun's question.

For example, why is Xiao Ming’s home so far away from the school? Will the dog be eaten by someone on the way? Why does Xiao Ming have to use it? And why is the time so accurate?

Empress Changsun heard this question while having lunch. She was picking up a pineapple and putting it into her mouth. She just frowned slightly, and said to Li Shimin: "Sixty miles, is this worthwhile?"

"What? How did you calculate it?" Li Shimin was so surprised that he almost threw away the chopsticks in his hand.

"Don't this be counted? The puppy spends as much time as Xiao Ming, and that's the puppy has run for an hour and a half. You can tell by the speed of the puppy." Empress Changsun looked at Li Shimin with a strange look and said slowly.

"That's so simple?" Li Shimin asked in confusion.
Chapter completed!