People always say that youth is the basis to do a lot of things. Indeed, young people can do what they want and try to do some crazy things to leave good memories. As for me, I have done the crazy thing and I felt so awesome. It was my friend who asked me to join the flash mobs. At first, I felt so crazy and couldn’t believe such activity would around me. But I said yes at last because I wanted to try something new. We practised in the group, then after a week, we danced in the central square. It was such a good experience for me, and the memory will last forever.