Introduction: Pangwei goes roller skating to the biggest park in City B as usual. I don't know why, I'm always inexplicably nervous today, like an ugly daughter-in-law who wants to see her in-laws, nervous for no reason. When Pangwei arrived at the gate of the park, he stopped his bicycle, and there was a chain lock on the front wheel and a U-shaped lock on the rear wheel, why did he lock the two wheels? Many people have asked Pangwei, and Pangwei's answer is as foreign as his name: "Because then the thief will not be worried." Yes, Pangwei is a very cautious person, he has to consider everything from many aspects, and he will do it only if he is sure that it is foolproof, to put it in layman's terms, that is, obsessive-compulsive disorder. Because the thief wanted to steal the second-hand mountain bike he bought for 250 oceans, no matter how many locks he locked, people drove a small three-wheeled car and moved it away, and then he had nowhere to cry if he wanted to. Change shoes, backpack, put on headphones, go smoothly, move naturally, and get ready. I entered the park with a charming smile that I thought was the best in the world...