Literature Reference: 祖龙一夜死沙丘，胡亥空随鲍鱼辙。—— 《祖龙行》 The First Emperor died overnight in the sand dunes, and Huhai followed in vain the tracks of the salted fish. Source from 'Zulong Xing'.
沙: Sand, grains of sand.
丘: The surname, hill, and mountain. This character is auspicious for attracting noble and influential people.
Meaning: The sand dunes symbolize historical changes and vicissitudes, implying resilience and depth.