Learning is hard, but it is also full of happiness.
She is a happy little angel.
How happy our summer vacation life is.
The happiest people are those who are too busy to notice whether they are happy or not.
6. In his twinkling eyes, I read happiness.
7. I wish you a happy New Year and a bright future for Wan Li.
This is a happy day, and the square is full of people singing and dancing.