As siblings, the bodhisattvas of the sun and moon are almost identical and difficult to tell apart in their representation. 

The primary identification is in the color of hand held disks representing their radiance. The sun is typically shown holding a red disk and the moon a white disk. Here, the sun is shown with a white disk and the moon a black disk. The white disk represents the source of compassion and liberation from suffering. The black disk represents the future liberation of all beings from suffering.