Eason Chan has a song called Ten Years. The lyrics show that ten years ago, things in the world were constantly changing. But I am not as experienced and mature as him. I don't have to count the ten years I have lived on two fingers. But three years is enough to make things different. What you think is not necessarily what you think. Maybe it's not that things change all the time, but that you never see it clearly. (Actually, it's the mentality of a nagging little brat and the experience of a female loser)