I Am Bound to the Underworld System for Spiritual Recovery

The end of the world is coming, spiritual energy is revived, war is raging, and mankind is in danger! Ding, congratulations to the host for awakening the underworld system. By collecting resentment points, you can summon ghosts to help you fight. What? A mere ghost actually wants 1,000 resentment points. It turns out that his combat power is off the charts, oh, that's okay. Let's see how Chu Yang uses the underworld system to save China from danger! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.