The heart always looks at the bright moon, which shines on the ditch. If there is true feelings in the world, how can others see jokes?

I compare my heart to the bright moon, and the bright moon shines on the ditch. "That is to say, one person is kind to another, but that person is indifferent and ungrateful.

The man's sincere efforts have not been rewarded and respected.

To put it bluntly, a person likes the bright moon, but the bright moon doesn't understand amorous feelings, that is, he devotes himself to the bright moon, but the bright moon fills the ditch instead of shining on him. It is used to describe that what you like or want to do has not been realized or done, and what is more helpless is that the people or things you like or want to do are worse.