朱颜改
[zhū yán găi]
'Zhu Yan Gai' means that one's looks or the redness (Zhu means red, representing youth, vitality, or even romantic passion during its prime times) of one's face has changed ('Gai' meaning to revise or transform), often referring metaphorically not only to facial alterations but more profoundly indicating personal development, maturity or shifts from youthful appearances due to life's passage.