Literature Reference: 严城昼不开，伏兵暗相失。—— 《相和歌辞 从军行》 刘希夷 The stern city gates remained closed by day, while hidden soldiers lost contact with each other. Source from 'Xianghege Ci: Congjun Xing' by Liu Xiyi.
严: Strict and majestic, embodying a serious attitude towards life and the courage to pursue one's aspirations.
城: City, metropolis. In personal names, it conveys the meaning of prosperity, flourishing, and a peaceful and prosperous nation.
Meaning: Yancheng refers to a tightly guarded city, symbolizing impenetrable defense and authority.