Literature Reference: 君子终日乾乾，夕惕若厉，无咎。——《易经·乾卦》 The superior man is active and vigilant all day, and in the evening still cautious as if in danger; thus, he remains free from blame. Source from 'I Ching - Qian Gua'.
惕: Vigilance, cautious and prudent: be alert and wary.
Meaning: Vigilance and caution, symbolizing constant alertness to avoid mistakes.