The black-robed man had come into contact with countless ghosts. In his impression, ghosts had always been stupid and had always been their tools. These undead creatures did not know what death was. They did not feel pain, were not afraid of death, and would not retreat. If you gave them an order, they would not have any other reaction except to carry it out.
Of course, there were also some very powerful ghosts, but such ghosts were really rare. Those powerful ghosts could no longer be regarded as ghosts. They were also cultivators, real ghost cultivators. Such ghosts would not be subdued by people.
