What meaningful things can I do on my birthday?

You can go out to play, meet friends, have dinner, sing karaoke in a disco, or go to an amusement park. Of course, I think the most meaningful thing is to meet friends I haven't seen for a long time, no matter who they are, even if they are not particularly familiar with them before, but it is necessary for them to get together and have a meaningful day, otherwise they will really be strangers forever.