Over the next two days, since time was short, Guan Tong didn't open a new page in the Wordless Book. Instead, he focused on testing his Shadow's ability to shift between corporeal and incorporeal states.
During his tests, he discovered a flaw.
It was an issue of line of sight.
The Shadow itself had no senses; its movements all required Guan Tong's command.
This meant that if Guan Tong wanted it to go somewhere outside his field of vision, it was completely impossible.
Guan Tong was still considering how to solve this problem. He could either ignore it or find a way to give the Shadow some form of Perception Ability, but not full sensory perception.
If it had full senses, its advantage of being immune to pain would be lost.
Guan Tong considered attaching a hidden camera to it while he carried a real-time video receiver. However, this was susceptible to signal jamming. Besides, the moment the Shadow turned incorporeal, the camera would lose its support and fall to the ground.
