Literature Reference: 九域咸雍，四溟为纪。—— 《郊庙歌辞 祭方丘乐章 顺和》 The nine regions are in harmony, and the four seas are governed. Source from 'Jiaomiao Cige: Ji Fangqiu Yuezhang Shun He'.
咸:
雍: Harmony. Often used in names to describe an elegant and dignified person.
Meaning: Xian Yong signifies universal harmony and prosperity, representing peace and flourishing.