The moon is a key symbol in When the Sea Turned Silver, representing both sacrifice and the idea that perception shapes reality. Much of the novel revolves around Pinmei and Yishan’s search for the “Luminous Stone That Lights the Night” (25). Their journey leads them to Sea Bottom, where they discover that the Luminous Stone is, in fact, the moon. The people of Sea Bottom perceive the moon not as an object in the sky but as a glowing stone beneath the surface of their lake, underscoring the theme that Perception Shapes Reality. This revelation challenges Pinmei and Yishan’s understanding of the world and highlights how different viewpoints can alter what is considered real.

The moon also serves as a symbol of sacrifice, particularly through Yishan’s connection to it. As the Old Man of the Moon, Yishan ultimately gives up his youth to save Amah, embodying personal sacrifices for the greater good. This act of selflessness has permanent consequences—Pinmei and Amah will only be able to see Yishan in the moon, never speaking with him again. Like the moon’s cyclical nature, his sacrifice represents the inevitable loss that accompanies noble actions.

Additionally, the people of Sea Bottom do not call the moon the Luminous Stone; instead, they refer to it as Nuwa’s Tear, further linking the moon to the motif of sacrifice.