The content is as follows:
1. I always yearn for many things. I wish myself a happy 21st birthday!
2. Happy 21st birthday, I said to myself, the candles are lit and the loneliness is brightened!
3. Grow up, be good, and live up to expectations. Happy 21st birthday to yourself!
4. My dear, I just turned around, not because I blame you.
Happy birthday, bless yourself!
5. Be a kind person, a person who is liked by others! Happy 21st birthday to myself!