CCTV conducted a social survey some time ago and asked "are you happy" when "catching people" in the street, Various answers vary, some say "I'm very happy", some say "I don't feel happy", and some even say "my surname is Zhang, not Fu". Ha ha, in short, all kinds of shocking answers can be found everywhere. So, what is "happiness" in our life? I've been thinking for a long time. I really don't have a definite answer. There are many kinds of people's needs. Those who ...