Fantasy: How Can I, a Ghost Cultivator, Absorb Spiritual Energy?

As the only disciple of the top ten ghost commander Bai Wuchang, Liu Xian wants to escape to the underworld... The master was pierced through the chest by a sword from the heavenly immortal, and the assassinations continued! Hateful, terrible and pitiful! The young man was forced to hide in the underworld, but the human heart in the underworld was actually more terrifying and unpredictable than the ghost. I, Liu Xian, will return to the underworld in five years. I will naturally bear the master's mantle! All ghosts in the underworld and wronged souls in the world, if they see me, just kowtow! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.