Immortality is ruthless, but humanity is sentimental.
If you want to become an immortal, you must first break away from the world of mortals.
What happens after the break?
Intent: Only by cutting off love can an immortal become an immortal, but where did the world of mortals go? It explores the irreconcilable contradiction between love and Tao, humans and immortals, and the choice of imprisoning oneself for love.