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The title goes like this:

On the day of the young lady's wedding, in order to test the groom's official talents, a question was asked. The answer can be a cave room. The topics are as follows:

Zhang San and Li Si wanted to know the birthday of the young lady, so the young lady gave them ten dates: May 15, May 16, May 19, June 17, June 18, July 14, July 16, August 14, August 15, August 17.

The answer lies in it.

The lady only informed the month of Zhang San's birthday, and informed Li Si's birthday.

Zhang Sandao: I don't know Miss's birthday, and Li Si won't know either.

Li Sidao: I didn't know it at first, but now I know it.

Zhang San said with a smile: Then I also know.

So, what is the birthday of the young lady?

The bridegroom answered accurately and entered the cave room. Do you know?

Remember: a stick of incense time, a chance. If you answer incorrectly, the trap will be locked and reactivated after one year.

We all pondered. Bai Hui and Long Wenwen took the pen and calculated it in the notebook.

To put it bluntly, no one here is stupid, but this question is really tricky. It's just a few simple words, and people are confused. What happened to the birthday on which day? Does it make sense?

Obviously, this question should be a very difficult question in the society at that time, and it should be very difficult to calculate the time of a stick of incense. But for the people of the Mo family, it should be a very simple question.

The correct answer to this question should be told to Xiao Han, and Xiao Han only needs to enter the correct answer. And I found that the above board can be rotated, and the next time I open it, it shouldn't be this question.

Therefore, if you don't calculate the time of a stick of incense, it takes a longer time to calculate it, and it will be useless to keep it for the next year.

To put it bluntly, this mechanism was only for Xiao Han to play with at that time, and the answer had already been told to him. Bojun just smiled.

However, the subtlety of the Mohist mechanism can be seen from this.

But now, for us, it's a huge/big test. If this can't be counted in the time of a stick of incense, or if the answer is wrong, we will all die here.

In such a stressful situation, it is difficult to ponder this question calmly. And this problem is not exactly a math problem, it is more about logic. I don't know others, my current logic is chaotic, and I can't calm down to think about these conditions of words, let alone connect these conditions.

A stick of incense is thirty minutes, a quarter of an hour. If I am given a space to calm down, I think I can solve this problem, to put it bluntly, this problem is not very difficult, the difficulty is related to life and death.

If you answer correctly, you will live, and if you answer wrong, you will die. This is the biggest test for everyone.

Huzi said loudly at this time: "General Hu, didn't you graduate from Tsinghua University?" Isn't that a piece of cake for you! ”

Hu Junjie said: "This question is not as simple as you think. I think it's better for everyone to count together, we only have a stick of incense time, we can't figure it out, everyone dies here together. ”

Huzi said with a big grin at this time: "Even if I want to die, I can't figure it out, I have a mess in my head now, and I'm afraid that this head is not a slurry/paste!" ”

Bai Hui shouted over there, "yes, what kind of weird question is this?!" ”

Grandpa Bai said: "I'm old, and I still have young people to think about it." Chen Yuan, General Hu, it's all up to you. ”

At this time, I suddenly missed the fog, which calmed me down, and now I can't calm down at all.

But it was clear that there was no fog at the moment, and it would have been nice to have found the pillar at night.

After about ten minutes, Huzi said loudly, "Didn't you figure it out!" ”

Bai Hui shouted, "Don't make any noise, forget it." ”

I knew I couldn't expect anyone else to do this, I had to calm myself down. I had to find a way to get rid of my thoughts.

That's when I raised my shotgun and fired a shot into the roof. This shot made everyone a thriller.

Hu Junjie shouted: "Chen Yuan, you are sick!" I've been disrupted by you. ”

After this shot, I slowly closed my eyes, and at this time I had no distractions, and calculated in my mind:

For the sake of simplification, Zhang San uses A, Li Si uses B, and Miss uses C.

c tells the date of b's birthday;

c tells the month of a's birthday;

May 15, May 16, May 19;

June 17, June 18;

July 14, July 16;

August 14, August 15, August 17.

In the first sentence, A says, I don't know, and B doesn't know.

A only knows the month, but does not know the date, and can tell that B can't guess the month even if he knows the date, so the date of this month must overlap with the date of other months.

May is excluded because May 19 does not overlap with other dates;

June is excluded because June 18 does not overlap with other dates;

So the birthday must be in July or August.

The second sentence, B says, at first I didn't know C's birthday, but now I do.

First of all, according to A, the possibility of a birthday in May and June can be ruled out.

b The month of the date of birth can be determined on the basis of the known date, so that this date must not be in July and August at the same time, excluding July 14 and August 14.

Now the three remaining times are July 16, August 15, and August 17, and b knows the date to determine the date of birth;

In the third sentence, A said that I also know, A can exclude July 14 and August 14 according to B's words, if the birthday is in August, A can't tell whether it's August 15 or August 17, so A can judge that the birthday can only be July 16.

Therefore, C's birthday is on July 16.

When I opened my eyes, I quickly turned around and ran towards the pillar, and when I got to the front of the pillar, I pressed the three numbers 716. The three numbers did not pop up when pressed, and it is obvious that this is a combination lock.

Now as soon as I press "enter", I know if the answer is correct.

When my hand was on "enter", Hu Junjie said loudly: "Wait a minute, how do you know it's 716?" ”

I muttered, "I don't have time to explain to you." ”

I just pressed the button.

After three seconds of pressing the button, the ring handle on the door turned on its own, and the door slowly lifted. However, after the door was raised, it did not stop at it, and after reaching the top, it began to creak and creak downward.

I said, "Everybody, get out, this thing will turn off automatically!" ”

Hu Junjie said loudly: "There is still time, I'll go get a few things!" Climb fast, come with me. ”

This thing really asked for money and didn't want to die, so he ran out directly to the back with someone. I looked at my watch and shouted, "It's only a quarter of an hour, go and get back." ”

Huzi and I didn't care so much, and went straight into this big pillar, which was a very narrow downward spiral staircase. After we went in, Bai Jingqiu came in with Bai Hui.

Huzi smiled and said, "Grandpa Bai, why didn't you follow Hu Junjie to get the baby?!" ”

"I'm not good at it." Bai Jingqiu said, "I'm ashamed, I'm old, so I won't make trouble." ”

The three members of the Dilong family also came in, and then there was the wounded, he couldn't run fast, so Hu Junjie didn't take him to the harem. Everyone stood inside waiting for Hu Junjie and the others.

Huzi and I came in first, and naturally we were squeezed underneath.

Huzi and I climbed up from below, and when we reached the door, Huzi pointed with his eyes. There's a pull ring here, and obviously, this pull, this door closes.

I understand what Huzi means, he asked me if I wanted to pull it down. I looked at Huzi and shook my head, and my meaning was obvious, the heart of defense is indispensable, and the heart of harm is indispensable.

Here, there is a keyhole, and this door can be opened with a key from the inside. If you are outside, you can only use the answer password.

As for why it was designed, I don't know. I didn't have time to think about these issues, and now I look forward to Hu Junjie and others coming back soon. The door is falling little by little, and the creaking sound is endless, and the heart is frightened.

Long Sihai said: "If you can't come back, do you have to answer the question again?" Is it time to change the question? It's hard enough. ”

I said, "There's a keyhole here, and if you have a key, you can still open it from the inside." ”

Long Sihai said: "After so many years, where to find the key!" ”

I kept looking at my watch, and I kept looking at the door.

This door is getting lower and lower, this Hu Junjie has not come back, I listened closely, and their footsteps could not be heard.

I have a bad feeling in my heart that something is going to happen! If this door is closed, Hu Junjie and the others will have to look at the next question, and it is not certain whether this next question can be answered.

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