"Lu" is the foundation of the earth, implying that the mortal body has its beginnings; "Li" is the fire of the Eight Diagrams, indicating the ambition of the sword to burn the sky and split the universe.
Homophonous for "kill away" - the double imprint of the pain of parricide (younger sister was kidnapped) and the fate of killing a god. The rusty knife eats the gods, and the nine hells bury the sky - a mortal body cuts off the backbone of the gods, and the eternal path of the sword is inscribed on the heavens!
Very beautiful, very beautiful