Literature Reference: 悦，喜也；东，东方也。—— 《说文解字》 Yuè means joy; dōng means the east. Source from 'Shuowen Jiezi'.
悦: Joy and delight. Beneficial for physical and mental well-being, interpersonal relationships, and professional growth.
东: The East, the direction of the sunrise, symbolizes the essence of hope.
Meaning: Joyful heart, shining like the bright rising sun of the east.