In the previous interrogation with the help of hypnosis, Jiang Beiran learned that raising a ghost did not necessarily have to be as bloody and violent as Tian Ge.
Although blood pools, corpse mountains, and wraiths could indeed speed up the speed at which ghosts became stronger, they would also make ghosts extremely ferocious and difficult to control. Moreover, the upper limit of their growth would also be restricted.
Tian Ge had used this extreme method because he wanted to create a few powerful ghosts to protect himself.
Generally speaking, ghosts needed Yin Qi the most when they were growing.
For ghosts, Yin Qi was equivalent to the spiritual energy of cultivators. It was indispensable.
Apart from Yin Qi, evil Qi, evil Qi, and wild Qi were also the favorite of ghosts. This kind of Qi was especially strong in places where there was war everywhere.
