Literature Reference: 分明碧沙底，写出青天心。—— 《汝州南潭陪陆中丞公䜩》 Clearly beneath the emerald sand, it writes the heart of the azure sky. Source from 'Banquet at Nantan in Ruzhou with Assistant Magistrate Lu'.
碧:
The character "碧" originally referred to emerald-green jade, and later extended to signify the color emerald green. In names, it often conveys a sense of vitality and vibrancy.
沙: Sand, grains of sand.
Meaning: Emerald sand symbolizes purity and depth, like the clear sand at the bottom of a stream.