Ximenyu and ximenyun crossed the cliff, flew to the opposite side, and then went down according to the route.

Before long, I came to a cave. If I want to go on, I have to go through the cave. However, there is a strong guard in front of the cave.

There is a big sign next to the cave. It says, "answer the following questions correctly. Through this cave, you answer wrong. Please leave."

Question 1: who doesn't see a doctor?

There is a man who was born by your parents, but he is not your brother or sister. Who is he?

What are the things that can only be done by one person?

What things often come but never come?

What goes up and never falls down?

There are only two words in Ximen Yu's mind: "I X!"

Ximen Yun sweat Yan way: "do what ah, brain sharp turn?"

The strong man in front of the cave said: "after knowing the answer, communicate with my soul. If the answer is correct, you can go through this cave and enter the next level."

Ximenyu asked: "why didn't it depend on strength? We didn't do it at all. "

The strong guard said: "because there are 100 gates, and the entrance road, do not test the strength, look at your brain."

Ximen Yun said, "but don't you think it's unfair? For example, there is a strong man here, but he can't turn his thinking. It's very unfair to him. "

"Wrong, if someone can't turn his mind around, but he has strong talent and good luck, then he will never come to this entrance. He may choose to go to the door where he can only rely on pure strength."

Ximen Yu nodded his head, which was right.

"Well, then I know the answer."

"Say, the first question, who doesn't see a doctor when he is ill?"

"Ximenyu's soul information replied:" the blind. "

"There is a man who was born to your parents, but he is not your brother or sister. Who is he?"

"Myself!"

"What can only be done by one person?"

"Dream!"

"What always comes but never comes?"

"Tomorrow."

"What goes up and never falls down?"

"Age!"

"Well, all right. You passed the third level."

Ximenyu went through the cave. After a while, Ximen Yun also went out.

"Ha ha, both of them have passed."

Ximen Yu said with a smile: "I really don't know what the people in the misty mountain villa think. They have to rely on their intelligence even though they have a few brain twists."

"Maybe they don't have a brain teaser here. We've met the earth stars, so we can know. However, it is also a test of whether a person can turn his mind on the road of cultivation in this life, and whether he is the kind of person with one track mind to the end. "

"Whatever he is, let's go to the next level."

More than 70% of the people were excluded from this critical juncture.

Ximenyu and Ximen Yun were the first to come to the fourth level. In a room, a strong man sat in the room.

As soon as ximenyu entered, the strong man said, "are you ready? I ask, you answer, of course, you tell me the answer in the form of soul communication. "

"Good!"

"Eighteen catties of sheep, three catties of ducks, four liang of quails, ninety-nine in all, one hundred catties. How many of them have each?" Asked the strong man.

Ximen Yu and Yang Qian are stunned, I x, the fourth test is more difficult.

Ximen Yu thought for a moment and replied with his soul information: "there are three sheep, eight ducks and eighty-eight quails."

Ximen rhyme is not so fast. Take out paper and pencil to check the calculation. First, set sheep as X, duck as y, quail as Z, and then work out the equation, so as to solve the equation and calculate the number of XYZ.

It's difficult to calculate the rhyme of Ximen.

For people on earth, this is not calculated, it is really too unreasonable.

"The second question, I asked Li Sansong, who opened the shop. All the guests came to the store. There were seven guests in one room and more than seven guests in one room, nine guests in one room and one room empty. How many customers are there in the chicken room?"

Ten seconds later, ximenyu immediately replied: "eight guest rooms, 63 guests."

However, Ximen Yun is still working hard on paper. However, Ximen Yun has graduated from a key university, but it can't be as complicated as Ximen Yu's, computer like brain, no matter how complicated it is, you'll know the answer once you think about it.

It seems that there is no battle on the road to gate 20. All the tests are intelligence.

"The third question is that there are now three steps, one of three steps, from five steps to two. How about Wei Tian? "

"Eighteen steps!"

"There is a square pond. The side length of the pond is one Zhang. There is a reed growing in the center of the pond. The reed is a foot above the water. If the reed is pulled to the bank, it will just touch the shore. What is the depth and height of the reed?""The pool is 12 feet deep and the height of reed is 13 feet!"

"Well, you've passed the test. You're so smart. You'll be in the inner house again."

Thank you Ximenyu successfully passed the fourth pass.

In general, there are only four levels.

In particular, the fourth level, it is estimated that many practitioners will not be able to pass. They can only count their bad luck and run to the road of mental retardation.

Ximen Yu waited for a few minutes. Ximen Yun also came out and passed the customs smoothly.

"Elder sister, the front is the inner house. We both passed the qualification smoothly."

Ximen Yun curled his mouth and said: "our earth's mathematics and physics can't be compared here. I'm a key university at any rate. Hey, who is this difficult?"

Ximen Yu said with a smile, "but it's very difficult for practitioners born in this world."

At this time, one of them has passed.

It seems that there is no shortage of mathematical experts among the practitioners in this world.

Ximenyu and ximenyun successfully arrived at the inner mansion of the misty mountain villa. Thousands of people were waiting there. Ximenyu saw yuedongling. She came in long ago. Although she was only 15 steps old, she was very powerful. She passed through the barrier and entered the inner mansion.

"Yuedongling!"

"Sister in law, you have come in. What's the matter? Is it difficult for you to get in the way?"

"And you?" Ximen Yun goes to yuedongling.

"We'll have four passes. There are some strong men blocking our way. I've come here. I guess you are too! "

Ximen Yun shook his head and said: "we are not at all. We did not test the battle at all. We tested the strength."

Seeing that Yue Dongling was puzzled, Ximen Yu said, "if you ask, who is sick and doesn't see a doctor, do you know?"

"Insane?"

"No!"

"Is the practitioner sick? Most practitioners don't see a doctor. "

"No!"

"What on earth is that?"

"Ha ha, if it's you, you won't know. Maybe you won't be able to enter the inner mansion. It seems that you are lucky that you didn't follow us through gate 20. The answer is blind. They are blind. How can they see a doctor? "

"Eh! Isn't that a trick? "

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