This sentence comes from Jin Yong's "Eternal Dragon Slayer", which is the desperate words of Zoroastrianism when the six sects besieged Guangmingding. Combined with the context, I think it will be the burning flame that burns my mutilated body (Zoroastrianism especially worships flame). What is there to be happy about living, and what is there to be distressed about dying? Eliminating evil and promoting good for the sake of light (related to Zoroastrianism), joy and sadness are meaningless in the end. Pity my world, there are really many troubles. How unrestrained and admirable.