Explain the red feet: pure gold, pure gold. There is no pure gold. Metaphor: Nothing is perfect. Perfect person: a perfect person, a person without any shortcomings. It is also a metaphor that you can't ask a person to be free from faults and mistakes.
Source: Ji Xing, Fugu, Dai Song: "Gold has no color, but white jade has slight defects. I am not prepared for help, I wish the old gentleman a family. "
Sometimes a foot may prove short and an inch may prove long-everyone has his strengths and weaknesses.
Shorter feet and longer inches. Metaphor people or things have their own advantages and disadvantages.
From "Chu Ci Bu Ju": "The ruler is short, the inch is long, the material is insufficient, the wisdom is unknown, the number is insufficient, and the god is unreasonable." Biography of Wang Jian in Historical Records: "The second slang:' The feet are short, but the inches are long.' Leitian expected the enemy to change, which surprised and shocked the world, but failed to save the victims. "