Literature Reference: 筑城畏不坚，坚城在何处？—— 《杂曲歌辞 筑城曲》 Fear not the strength of building walls, for where is the truly unbreakable fortress? Source from 'Zaqu Geci: Zhu Cheng Qu'.
城: City, metropolis. In personal names, it conveys the meaning of prosperity, flourishing, and a peaceful and prosperous nation.
坚: Sturdy and solid. In names, it often implies a resolute will and an indomitable spirit of perseverance.
Meaning: The strength of city walls symbolizes stability and an indomitable force.