Literature Reference: Yu means brilliance; Yuan means wall. 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.
垣: It also broadly refers to walls. In names, it carries the meanings of strength, solidity, and resilience.
Meaning: Brilliance shines like light, and stability stands like a wall.