Out to Dai Song Fugu's "Jixing": "Gold has no color, but white jade has slight defects." I begged for help, but I didn't want to get ready. I want to go to your house. "
It is also a metaphor that you can't ask a person to be free from faults and mistakes. There are no perfect people in the world, and gold is not all red. People always have advantages and disadvantages.