Please Come Up, the Immortal

Can't beat it? Doesn't exist! Great Immortal, please take the initiative, there is no obstacle that cannot be overcome. In our profession, we practice medicine and treat deficiencies. Not sick? It's okay to take two steps. Regardless of the scenery outside, what we eat is the food of the world, and what we do is the work of the underworld. This female ghost is quite cute. What should I call her? Is this male ghost so ugly? He looks like an evil spirit at first sight, so kill him quickly. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.