Literature Reference: 家家养男当门户，今日作君城下土。—— 《杂曲歌辞 筑城曲》 Every household raises sons as pillars of the family, today they become the soil beneath the city walls. Source from 'Miscellaneous Songs: The City-Building Song'.
作: To engage in work, to labor.
君: A nobleman, akin to a ruler, fosters extensive goodwill and easily garners the appreciation and support of influential benefactors.
Meaning: Becoming a ruler or leader, symbolizing responsibility, duty, and leadership.