Literature Reference: Yu means brilliance; Xi means radiance. Source from 'Shuowen Jiezi'.
煜:
Yuming, Yiyu, and Guangyao, all signify brilliance and radiance. When used in names, they represent a luminous and prosperous future, fostering success in one's career and endeavors.
熹: Brightness and gentle dawn. By extension, it signifies conducting oneself with integrity and grace, being open and generous in dealings, and excelling in social interactions.
Meaning: Yu Xi signifies brilliance and radiance, symbolizing light and hope.