Sun Zhen had explained that such entities are both individuals and groups, named "human ghosts" in that ancient tome, essentially ghosts masquerading as humans.
If you don't know, you'll just feel that there is one more unfamiliar acquaintance in your life, but if you do know the truth, the entity will start to haunt you.
However, the ancient book doesn't disclose what these human ghosts are up to because it's incomplete.
"There's a small issue here, which is why haven't you been affected?" asked Qin Muye.
He hadn't been affected because he was strong, but it was a big problem that Sun Zhen hadn't been affected by the human ghosts, as his manager had seemingly conjured up all sorts of connections and relationships out of thin air, embedded in both the web of big data and the memories of those around him.