1980, American presidential candidate Reagan said during the campaign: "Are you happy?" Take people's self-happiness test as the evaluation standard, instead of blindly pursuing economic growth rate.

Romain rolland, a famous writer, once said that only by believing in yourself can others believe in you. Lenin once said: Judge a person not by his own confession or opinion of himself, but by his actions.

Teenagers are smart, rich, strong, independent, free and progressive, better than Europe and better than the earth. "