Literature Reference: 独立栖沙鹤，双飞照水萤。—— 《池上》 A lone crane perches on the sand, while fireflies illuminate the water in pairs. Source from 'Chi Shang'.
栖: A place to dwell and take refuge; a sanctuary for one's being.
沙: Sand, grains of sand.
Meaning: Perching on the sand symbolizes independence and tranquility.