Literature Reference: 旦夕惕若。—— 《尚书·大禹谟》 Constant vigilance day and night. Source from 'Shangshu·Dayu Mo'.
旦: Dawn breaks, heralding the sunrise. The character "旦" originally signifies the rising sun, symbolizing vitality and vigor, which is beneficial for health and well-being.
Meaning: Dan symbolizes the morning and light, representing hope and new beginnings.