Kill the Demon and Upgrade to Restore Everything

The world is troubled by demons and ghosts are rampant; Trillions of human beings all feed on blood! —— Wang Feng turns on the [Demon Killing] system: [Kill demons and monsters and gain life span;] Consumption of lifespan, upgrade and restore everything! Martial arts, weapons, injuries... And even bringing people back to life are all included in this list. Physical sanctification, martial arts line, cultivation line, evil cultivation line, officialdom line, power line, family line, demon raising line, demon line, ghost control line, weird line... Everything is available!