no.186

Xia Yu sent me a text message and said: The elevator at the entrance of the ward has a long queue, if you don't wait for the elevator, run down from the fifteenth floor of the ward as much as you can, go out and go along the main road all the way to the right, and at the second turn you may see the mark I left for you. But if you want to catch up with me, you have to be fast.

It's infuriating!

But so what, it's not that I didn't even think about it and chased it in a hurry.

Fifteenth floor? It's nothing worth mentioning for a stout lad like me, though I ran downstairs and panted heavily, tired like a dog.

The main road of the hospital was directly in front of the ward, and I chose to go right according to Xia Yu's guidance, and at the second turn she said, I found an arrow made of white tape, which was attached to a particularly conspicuous place on the wall, prompting me to turn right.

I was contemptuous from the bottom of my heart, and at first I thought that the signs in her text messages were so subtle, but it seemed that it was nothing more than that.

Walking in the direction of the arrow, an arrow turning right appeared on the wall.

I used my brain to analyze it urgently for five seconds, and to see what it meant, she was still in the hospital.

I don't dare to brag about anything else, hide and seek definitely belongs to my professional strength. Of course, this is also related to a person's IQ, especially someone like me, who stands out from the crowd, and it is difficult to lose.

Maybe I ran too fast, and the beads of sweat oozing from my body were wrapped in close-fitting thermal underwear, slimy, and it felt very sour, but when I thought of Xia Yu's surprised expression when she saw me later, what was this?

I hurried and hurried, and it was the end of the road again, and there was another right-turn arrow.

I slowed down and gasped.

Damn, you won't be tricked again, will you? If the next arrow is still turned right, isn't Lao Tzu going around in circles!

I struggled with the last bit of trust between people, but the last right-hand arrow shattered it.

When I returned to the ward building covered in stinky sweat, Xia Yu was standing at the door waiting for me.

She smiled as if nothing had happened: "I'm back, it's really fast." ”

I had already thought of a hundred ways to get revenge on her, but when she appeared in my eyes, all my resentment vanished, and I just said to her angrily and funny: "You really deceived me." ”

no.187

Xia Yu and I were chatting in the hallway.

She complained that the conditions I had set were too harsh, that I had no direction or distance, and that I did not know the nature and characteristics of the environment in which I lived. Under this premise, trying to find me with two questions is tantamount to looking for a needle in a haystack.

"It's a loss to my ......"

Xia Yu was halfway through his words, and was directly snatched by me: "Thanks to your blue heart, extremely smart, resourceful, show off your wisdom, and clever calculations, right?" ”

She was stunned for a moment and smiled: "If you really think so, I won't refute it." ”

"Don't talk nonsense, tell Lao Tzu quickly!"

In order to solve this problem, the first thing she can think of is the Cartesian coordinate system.

She pulled out a map from her backpack and showed it to me, with various lines and arcs drawn on it. If she takes herself as the origin, and the east-west and north-south directions are the x-axis and y-axis, as long as I determine my abscissa and ordinate, I can determine the general position.

I smirked: "However, this plan was decisively rejected by me. ”

She disagreed, and folded the map back into her bag: "Pay attention to my words, it's the general location. Even the slightest error on the map will be magnified tens of thousands of times in reality, and it is really a difference of thousands of miles. Therefore, in pursuit of precise positioning, we must first understand the purpose of your family's travel. With this as a starting point, it is natural to do something next. At the time, I knew very little information, and I could summarize it in just two points. First, your phone was always turned off last night, what kind of urgent thing did you not even have time to charge? After that, I made an unknown number of calls to your landline, but no one answered, which means that your family has already been out of the nest before the first call. Second, judging by your voice this morning, you are physically and mentally exhausted, as if you had just recovered from some troubled event. But these are just my subjective assumptions, and it is not realistic to try to solve the problem by intuition. In this way, it becomes necessary to go to the scene to get clues. I can be biased in my judgment, but the thing itself is objective, even a little ruthless, it will only show you what you have experienced. So I decided to take a look around your neighborhood and hope to find some helpful clues. ”

"Wait," I interrupted, "how do you know the address of my house, I don't remember telling you." ”

She was a little surprised: "114 platform, don't you remember the last time we were in the cinema, our parents met." When they introduced each other, I learned the names of your parents on the side, and the user's main name and landline number can be used to check the address. ”

How could I not remember that I was almost scared to pee, but what exactly did I do next to my parents? No matter how hard I racked my brain, I couldn't remember.

There is always a mess in my head, and when I get old, I will definitely not be able to escape the clutches of Alzheimer's claws, and when the time comes, will I still remember the summer rain? If you remember, it's good, I can also hold Xia Yu's hand when I get old. If you can't remember, it's good, and it's a worry.

Xia Yu rearranged his thoughts: "Anyway, when I arrived at your door, the couplet on the door frame was only pasted with the upper couplet, and the lower couplet was not pasted before, it seems that when you go out, you are really in a hurry." It's a pity that I didn't study criminal investigation, so I can't identify footprints or write on the spot, and this little clue alone is still extremely limited in its help for the whole thing. So I had to walk around your house and cheekily ask your neighbors and people in the neighborhood in the hope of getting useful information in this primitive but effective way. Ask about this file, of course, the elderly who like to walk are the best choice. I was fortunate enough to learn from an old grandmother that last night she saw your family hurrying into a taxi, and your mother was holding her stomach in the middle of you and your father, with a very painful expression and an apparently weak look, still wearing plush pajamas and slippers. At this juncture of the year, your family is in a hurry, as if you can't delay every minute, and you don't even have your clothes neatly dressed, so connect the information you have back and forth, and the inference that your mother was admitted to the hospital for a sudden emergency is completely tenable. ”

I already have a rough idea of what is going to happen: "And then you use the salute to set my place." It doesn't matter if it's not on time, because you're listening, in other words, I'm just your reference. Whoever hears it first immediately uses the stopwatch to time it, and the second person hears it and it's over. Multiply the time of the difference in the middle by the speed of sound, so that we get a distance a. On the map, you can use the scale to measure the distance between yourself and the department store. If you hear the salute first, add that distance. If I hear first, subtract the distance. This gives us a distance b. The next thing you have to do is draw a circle with the department store as the center and the radius from B to see which hospital is on this circle. ”

After Xia Yu heard this, his expression was exaggerated: "Oh mom, Shibei should really be impressed for three days." ”

Her expression was so pompous that I couldn't stand it: "You don't come, hurry up and finish what you want to say in one go." ”

She blinked twice, "Where did you just come from?" ”

This is the consequence of desertion in class, even if a good student like Xia Yu can't keep up with the rhythm.

I kindly reminded her, "Speaking of which, you locked me in a circle."

"Oh," she realized, "isn't that a turtle in an urn?" ”

I was angry: "You are the turtle!" ”

She shouted that she was wronged: "Obviously you told me yourself, but I just said it more bluntly." ”

I don't bother with her, I can't mess with her anyway: "Please continue." ”

She pretended to cough twice: "You just used the word inaccurately, it should be to see if there is a hospital near the circumference of this circle, after all, it is impossible to be particularly accurate in this way." ”

She took out the map again and showed it to me: "You see, there are only two of them, the city doctor and the city traditional Chinese medicine, considering that my mother has an acute abdomen, of course it must be nearby, so I target the city people's doctor." On the way to the hospital, I was still very nervous because I was really not sure if it would be successful. The purpose of the second question is purely to test one's own judgment. Here again, we should mention the Cartesian coordinate system, if you take me as the origin and draw a circle with the straight-line distance from me to the city doctor, then the department store is in the second quadrant of this circle. In this case, if my inference is correct, the salute you hear must be coming from the southeast. As I emphasized before, you have to face due north, and that's the purpose, and only if two people are in the same direction, there will be no confusion in the direction. ”

I don't care much about the content of her analysis, I just care why she calls my mother a mother, and she should be serious when she should be serious, should I be consulted in advance for this kind of thing?

So I asked her, "Don't you think you just said the wrong thing?" ”

"Huh?" She shook her head in confusion, "Is there one?" Where is it? ”

I said to myself: "It's nothing, please continue." ”

She paused for a moment and looked at me suspiciously, "What do you want?" ”

I couldn't hold back a laugh: "It's nothing, tell you to continue." ”

"Neurotic!"

She said: "After arriving at the hospital, I first went to the outpatient and emergency registration office to inquire and was told that my mother had been transferred to the inpatient department, so I went to the inpatient registration office again and found out that I was in the general surgery department. I don't need to say more about the rest of the matter. ”

I grinned with hatred: "Come on, why do you have to sneak me?" ”

"I haven't been idle all morning, so you have to be funny."

.。 m.