I was walking on the summer street without wearing sunscreen. People came and went with umbrellas, whitened skins and make-up masks. Suddenly, I felt tired. "Why do we need so many protections? Why can't we just walk under the sun free and careless? Why can't we just roam the earth like dinosaurs?" On the last thought, I saw people on the street turned into all kinds of dinosaurs. It was kinda funny.