"If you feel happy, clap your hands, clap; if you feel happy, clap your hands, clap; if you feel happy, express it, let's clap your hands together, clap; if you feel happy, stomp your feet, boom; if you feel happy Just stomp your feet, boom; if you feel happy, express it, let's stomp your feet together, boom..." I sang this song as a kid, clapping and stomping.My hands turned red, my feet hurt, and I made the classroom a mess, lest others would not know my happiness. Sing this song now, will there be any movement? The song is still that song, has the morals of the world changed, or have we changed?

The world has always been like this, neither beautiful nor ugly, neither hot nor cold, neither good nor bad exists, it's just what you think of it.If you think the world is ugly, then it will show up in front of your eyes as ugly; if you think it can be transformed and improved, then it will show beauty in your eyes.A good person often sees the bright side of life, and a desperate person often feels the dark side of life, so what the world looks like depends on what you look like—but why am I different from when I was a child?