Literature Reference: 延，长也；嘉，善也。——《说文解字》 Yan means long; Jia means good. Source from 'Shuowen Jiezi'.
延: "To extend, to introduce, and to facilitate the attainment of grand achievements, this character is auspicious for garnering fame, fortune, and good luck."
嘉: Praise, auspiciousness, celebration, and happiness.
Meaning: Yan Jia symbolizes enduring goodness and benevolence, representing lasting happiness and auspiciousness.