Literature Reference: 地阔平沙岸，舟虚小洞房。—— 《遣闷》 杜甫 The land is vast, the sandy shore flat; the boat is empty, the small cabin quiet. From 'Qian Men' by Du Fu.
舟: The Ark, a vessel.
虚: Illusion. Idleness. Vanity.
Meaning: An empty boat symbolizes a tranquil mind and a detached attitude towards life.