Once he died and returned to Hongmeng, he achieved greatness, but failed to achieve immortality. Immortality cannot be achieved without knowing the Tao. Mingdao knows what he is firm about, even if it means scheming against heaven and earth.
Mingdao: My beloved half will definitely depend on you from now on, no matter the wind or rain, if you become enlightened, I will follow you, and if I die, I will definitely pull you with me, so don't try to escape.