People struggling in darkness need to constantly remind themselves not to regard anyone as their salvation.
Shen Heyue's alone struggle in the darkness pulled him into the abyss time and time again.
But when he was really exhausted and ready to give up the struggle, he met his moon.
His moon said to him: I love you very much
Shen Heyue later understood that there was always the moon that loved him
Purpose: Healing