The Immortal Doctor

Every book is the same! The protagonist is poor, abandoned, and cheated on by his girlfriend.

Mutual visits!!! Swords carry the legacy of a thousand years, blades cleave the world in times of chaos. Spears move like ink dots, sweeping across the land; clubs vanquish demons and pacify all directions. The steel whip, used to subdue demons, shakes the five sacred mountains; the halberd, like twin moons, is a match for ten thousand.