Although they couldn't see or sense them, they were definitely there within the invisibility buff and must have heard the village rules that Li Huazhao had just recited.
The Heartstealer had said that those who saw the rules on the stele would establish a thought connection with those Paranormal Creatures who had signed the rules back then, creating the possibility of being "discovered."
This was not necessarily a good thing, but for them right now, it might not be a bad thing either.
The duration of the Black badge's buff was only one hour, and time was running short for them. They had to trigger the relevant quests within the allotted time, or it would be even more difficult to deal with these Root Source Monsters without the layer of invisibility buff.
"Hiss—wait." Li Huazhao suddenly gasped, a special power drawing his gaze toward the stele, the typeface on it undergoing another transformation.