Literature Reference: 君子防悔尤，贤人戒行藏。—— 《杂感》 A gentleman guards against regrets and errors, a wise man is cautious in his actions. Source from 'Za Gan'.
悔: Regret and repentance.
尤: Excellent, outstanding; even more, exceptionally; to ascribe blame, to linger affectionately, to dote upon.
Meaning: Regret and error prevention, emphasizing cautious behavior to avoid mistakes.