Thousands of Years of Sorrow and Sorrow Alone Sigh

A knife has no edge, why does it kill people? Where does a drop of blood fall before it falls into emptiness? Who will get happiness in a relationship when it causes pain? When does a person appear anonymously? The hidden dragon is in the abyss, the broken sword is in the hand, crying while wandering, showing mercy in eternity, never changing for anything, never asking where the footsteps are going, wiping a bright moon, cutting a wisp of spring breeze, covering myself with frost and snow, dancing to chaos in my world, if I am not crazy, who is crazy?