Literature Reference: 煜，光也。——《说文》；彦，美士有文，人所言也。——《尔雅》 Yu means light, as explained in 'Shuowen.' Yan refers to a virtuous scholar with literary talent, as described in 'Erya.'
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.
彦: A person of exceptional talent and distinction.
Meaning: Yu signifies radiant light, while Yan represents a virtuous and talented individual, symbolizing brilliance and outstanding character.