Literature Reference: 昱，日光也；恒，久也。—— 《说文解字》 Yu means sunlight; Heng means eternity. Source from 'Shuowen Jiezi'.
昱: Sunlight, radiance, and illumination. In names, it often conveys the meaning of warmth and a luminous, radiant presence.
恒: Eternity, unwavering perseverance.
Meaning: Yu Heng symbolizes the eternal radiance of sunlight, representing brightness and perseverance.