Driven by the fear instinct, all the undead below the Controller Level scattered and fled, leaving only the powerful undead unwilling to depart.
One of the instincts of the undead is to devour powerful energy, whether it be blood energy or Cosmic Source Power, both are their beloved "food."
All the other martial artists had shielded their powers, so at this moment, the energy-spurred ancient divine vehicle was like a bright beacon, informing these undead that there's a grand feast here.
The higher level the undead, the more demanding their energy needs. If they consume enough energy, perhaps they might one day transform and advance, possibly even developing intelligence and becoming true undead creatures!
So, such a vast amount of energy is undoubtedly exceedingly enticing to high-level undead! To have them leave is simply impossible.
