Lu Yuanming could feel that there was another specter within this building, a perception akin to sensing a source of heat.
Moreover, he could also sense that the remaining specter was far stronger than the octopus specter.
It was an inexplicable feeling; he could innately assess the strength and power of these specters. In his perception, the octopus specter, if compared to a creature of the Dark Matter World, would be only slightly stronger than the Human-Faced Dog, certainly not close to the strength of those colossal monsters.
The other specter he felt, however, was also a bit weaker than those colossal monsters.
The reason these specters of the real world seemed so mighty, possessing abilities akin to spatial transfer, mental control, and shockwaves from roars, could perhaps all be due to that unknowable object.