Why didn't I praise the person I like, and he didn't give me some later?

One is caring and loving from the heart, and whether there is a response or not, you will order it, because it is not a compliment, but a concern for your heart.

One is polite response, reciprocity, you come and I go.

If you don't praise the person you like, and you just want to see what kind of praise he gives you, then if you still can't restrain the eager little darling you want to like through this attempt, you can't stop yourself from releasing your emotions generously, and don't care too much about the other person's response. Even if you have a unrequited love, you will be happier than now.