"Then let's get started. "With the announcement of the jigsaw, the door to my small room opened automatically. I decided that there must be something strange ahead, but it was better than mixing with a sensor bomb that appeared silently behind me, so I cautiously stepped out the door.

The door to the birth room closed behind me, and I heard the latches in it, and thought there was no turning back. The room I'm in is about 40 square meters, very simple, with only a square table in the center of the room, and the overhead light is a bit old, but barely enough to illuminate the whole room. Directly across from the birth room, there was another door, which looked exactly like the one behind me.

"What is this room for?" I wondered to myself, "there are no windows, no necessities for life, and I can't even find any descriptive features, so it's hard for me to deduce where I am." , extrapolating, I'm not in a dream..."

"Su Ling. "The sound of jigsaws drifting overhead, and I guess there must be a microphone on the ceiling. "You're in a confined room right now, and there's enough air to keep you alive for eight hours, but I'm not going to give you that much time. For a long time, you don't know the value of time, and you can't study in one of the top universities in China, but you can't be a child all day long. Now prove that you have the worth of living, and from now on I will gradually pour chlorine into the room, reaching a lethal concentration in half an hour. You have two options, solve the answer to the question on the table before you die, and I'll open the door for you. Or simply repent, feeling sorry for the time wasted. Time waits for no one, and you can get started. ”

I don't know if it's a psychological effect, but I really feel that the air is starting to choke a little, and the nasal mucous membrane is pantothenic. Knowing that I could not afford to delay, I walked quickly to the table and found an A4 piece of paper on the table, next to a ballpoint pen, and I quickly skimmed through the contents of the paper by the dim light above my head.

I was a little speechless by the given questions, and asked for a Taylor expansion of the given polynomial, to get the McLaughlin expansion, and to expand at least to the tenth term. There is no skill in this question, purely based on the calculation ability, and with what I know about myself, I should be able to barely finish it in half an hour. However, the answer to this question is not the same.

"Thirty minutes to reach lethal concentrations is right. I smiled slightly, "But chlorine doesn't have to reach lethal concentrations to incapacitate people." At this rate, I will have intense discomfort in about 10 minutes, and I will be unconscious in about 20 minutes, and this non-nutritious advanced math problem will definitely be done, no, end. So I choose to repent, not to be annoyed that I wasted these thirty minutes on this problem. But since I didn't make it, I won't ask you to open the door for me, I'll do it myself. ”

He said repentance, but his body walked to the next door without sincerity, stretched out his hand and gently pushed it. "Click. "Unlike the previous door, this one is unlocked and opens by itself. "You were right. I stepped into the next room. As before, the door behind me closed again.

"It's kind of interesting. I felt the burning sensation in my eyes and throat, "I can feel the chlorine gas so real, it doesn't feel like it's in a dream." It seems that I really have to gamble on this so-called game. ”

I looked around at this room, it was a cylindrical room, still without windows, the lighting was still the same old ceiling light, and the same door was on the opposite side. This room is about 20 square meters, and it is more simple: nothing... In the middle of the floor of the room there is a round hole the size of a basin, and unless I lose ten kilograms, I will not be able to get down. When I took a closer look, I saw that there were a lot of gears in this round hole, and at the bottom was a pull ring. "Damn!" I felt that something was a little bigger, "it can't be this whole room, it's just a mechanism, right?"

"You've proven your worth. The sound of the jigsaw sounded again, "I'll pass the first challenge." "What do you mean I'm going to pass!" I shouted, "Well, it's going to pass!" "Hmph," Jigsaw said coldly, "you didn't do it perfectly, forget it, you'll figure it out for yourself right away." This room is for you to challenge whether you have the courage to live. With the value of living, you don't necessarily have the courage to live, do you dare to live for the sake of living? You should be able to feel that the temperature of this room is dropping. It was 22 degrees when you came in, two minutes passed, and now it's 12 degrees Celsius, and you can calculate how long you can hold out. How do I open the next door? Simple, just pull the tab in the hole, and the whole mechanism will be activated, and the door will open. But as the trap activates, your wrist will also be shattered by the gears. So let's see for yourself. ”

I looked at the hole in the middle of the room and became solemn. I now understand what Jigsaw meant when he said that the first challenge was not perfect, a ballpoint pen. If I had picked up a ballpoint pen, I could have sacrificed it and hooked the tab to save my wrist, but now it's too late for me to read it.

I could clearly feel the rapid drop in temperature and my body began to shake unconsciously. "All right," I said, "this shameful speed tells me that there is no other way to go in this room, but to make up my mind." Jigsaw old man, let me tell you, people are creatures, in order to survive, they can do anything!" I took off my shirt and tore it into strips of cloth to prepare for the next bandage, and by the way, I also gave myself something to bite. When everything was ready, I saw that my breath was already breathing, and I knew I couldn't delay any longer. "I'm Nero!" I reached out and grabbed the tab, "I'm Shanks... Uh..."As the mechanism activated, the door to the next room automatically opened, and my left wrist shattered instantly.

Even though the temperature was very low, I couldn't help but sweat. The pain of a broken hand can be regarded as having been experienced. I grabbed the strip of cloth and tried to wrap it around the stump, but my lack of expertise meant I had to wrap my left wrist into a mallet. It doesn't stop the bleeding completely, but at least it doesn't look as scary as it used to be. I spat out the strip of cloth from my mouth and struggled to get up. The intense pain put pressure on my brain, and the threat of the cold made me feel like I might faint at any moment, so I gritted my teeth and staggered a few steps into the next room.

I've always thought of myself as a strong-willed person (and I do), but it's better to try less in the future (although at most I will do it again). The door closed and locked behind my back again, and I collapsed a little and sat with my back to the door.

The room is divided into two parts, separated by an iron fence and each with a side door, which looks like a prison. On my part, on the ground in front of me, there was a pistol, and on the other side of the fence, there stood an old man who was old but still had sharp eyes.

Jigsaw stood with his hands behind his back and said to me, "Not everyone has the courage to cut off their hands, you have passed the second challenge." "Hmph," I said, "Usually when you show up, it's basically the end, let's say, how can this game continue?" "It seems that you have found your so-called pleasure, so that you are a little angry." Jigsaw's tone didn't fluctuate, but I could clearly hear the sarcasm. "The final challenge, I want to see, is your belief in living. ”