I found a key that day.

We know that keys can open doors and boxes. It is a magical but ordinary little thing, but we have never heard that a key can open time.

I found a rusty and humble key that day. I thought, whoever lost it must be in a hurry, so I went to the doorman and left it here. But the door is locked, and the security guard inside is working, as if he can't see me. It's weird. No matter how I shout, it's useless. I was angry and wanted to go away, but I couldn't help but want to use this key to unlock the lock. There is no one inside, rather the whole security room is gone, and there is only the door in front of me. I looked around. This is school, but it's too early. The school is under construction. I look at myself and find that my vision is much lower. So I'm getting smaller. I have the key. It's rusty. Only this key has not been changed by time. I eagerly took the key, carefully turned to the right and opened the door. Sure enough, I returned to the security room. The security guard inside put down his work and looked at me in surprise.

If I get the treasure, I will take it upstairs, and my classmates are in the classroom. I went back to my seat and found a small lock, and the size of the key changed accordingly. I learned the last lesson and pressed it slowly and gently to the right. In a blink of an eye, the bell rang. I looked up at my watch and actually passed a class! I am very happy and think this is really a treasure! Since then, every time I hate going to physical education class, I will gently twist this button. Later, I have sent away the courses I don't like, the time to do my homework, and the teaching and criticism from my parents and teachers again and again.

Once, I was about to turn the key and send away a boring math class. My friend suddenly leaned in and I almost jumped up. My hands are shaking, and I twisted into our 20-year-old world! I looked down and saw my shabby clothes and cheap shoes, while my friend was looking at me. His face is bright and clean, his clothes are in sharp contrast with mine, and my eyes are moist. Anyway, that's what I will be like in the future. I couldn't cry, but tears came out. I began to complain about this evil key, which I would never see again. The past experience of unlocking emerges. It turned out that I was willful.

I lost a key that day.