Literature Reference: All nine domains are harmonious, and the four seas serve as the boundary. Source from 'Jiaomiao Geci Jishen Yuezhang Shun He'.
四: Numbers and numerals.
溟: The sea. When used in names, it often symbolizes a person's broad-mindedness and lofty aspirations.
Meaning: The four seas symbolize vast and boundless waters, representing a broad and inclusive mind.