The middle-aged man holding the 'camera' explained, "This is called a soul-detecting device, capable of seeing things invisible to the naked eye."
Wu Bureau nodded, appearing calm on the surface but feeling somewhat creeped out inside.
Soon, a young lad with the soul-detecting device approached Lin Li, "Sister Lin, there are traces of a soul's presence here, and its last activity was around 9 o'clock last night."
Lin Li took the soul-detecting device and frowned, "Since there are traces of activity, it must still be here. Bring me my compass."
Although Lin Li didn't look much older than in her twenties, she was one of the few senior members at Bureau 549, endowed with the deepest experience. Her grandfather was a renowned ghost-catching Daoist priest, and she was extraordinarily gifted herself.
She turned the compass around in various directions, her expression extremely solemn, "It's no longer here."
"What does that mean?" asked the young man following behind her.