As Du You and his companions approached, Du You thought for a moment and released the Photon Elf.
The Photon Elf itself had almost no combat power. After its advancement, it was able to control ordinary humans, but it could not control undead creatures. However, the Photon Elf had one significant advantage: it had virtually no aura.
As long as it concealed itself, not to mention the undead, most scouting methods would be ineffective.
Du You was using the Photon Elf for scouting, and the Photon Elf was also able to communicate with his wristwatch, which was a technological product that could be used in the Other World, a special kind of technology.
After establishing communication, it could also send back some images. Unfortunately, the Photon Elf wasn't very smart, so Du You had to do the editing himself every time.
Finally, Du You saw the scene from the other side through the eyes of the Photon Elf.
