Literature Reference: Yu signifies permission and trust; Mian refers to a crown. Source from 'Shuowen Jiezi'.
俞: "Permission granted, with a joyful and harmonious demeanor."
冕: The crown, a ceremonial headwear adorned by ancient emperors and high-ranking officials above the rank of senior courtiers, later specifically denotes the imperial diadem.
Meaning: Yu represents promise and trust, while Mian symbolizes nobility and authority, embodying integrity and dignity.