There are always various kinds of sorcery circulating in the world, it's hard to discern the truth.
The methods of training ghosts are bizarre and diverse, each differing from the other, but ultimately there are only two.
These two methods can be likened to dog breeding.
The first method is to traverse mountains and rivers to find pedigreed dogs, combine with elite training methods, feed them scientifically formulated food, which is labor-intensive, and any slight mistake renders all efforts wasted.
The second method is much more brutal, it involves directly throwing a bunch of puppies into a pen, with no food or water, allowing them to kill each other off until only one remains, akin to nine dogs and one mastiff.
The ghost obtained through this method is the fiercest and most savage, doing anything to survive.
The ghost trainer will then spend three to five years teaching the ghost human words, understanding human intentions, and also teaching it the rules.
