That was what it meant to adapt to local conditions.
Take Liu Family Grandpa, for example.
He used birds for scouting.
He knew his Ghost-Eating Servants could not help him settle his affairs after his death. They only needed to scout. When it came to minor ghosts beneath his notice, the birds could handle those too.
Uncle Liu's dogs were different. He lacked his father's formidable abilities, so the medium and large dogs he raised could deter people as well as deal with sinister entities.
They also gave the people living at the Out-of-Town Manor some peace of mind.
Xu Feng had read that booklet.
In theory, the limits of the animals themselves fixed the upper limit of the Ghost-Eating Servants a person could raise.
Fierce beasts like lions and tigers could ward off evil and seize souls by their very nature.
They could do so without any special rearing.
But if someone applied the Ghost-Eating Servant method to them, they would grow stronger still. At times, such a servant could even deal with sinister entities of the "Fierce" class.
That was no pipe dream.
The problem lay in how to raise one.
The booklet on Ghost-Eating Servants focused on cultivating the "ghost-eating" part.
Not the "servant" part.
Its author had wanted to use livestock readily found nearby to survive in a world of sinister entities.
The author had not considered raising lions, tigers, bears, or even hyenas and leopards to devour sinister entities and increase one's strength. That left Xu Feng with the headache of improving on an old method and making something new.
Qualifications aside.
In all this, getting access to zoo animals was actually the least of his concerns. It was difficult, but there were ways to manage it.
Compared with that,
the harder problem was living