If the sanitation worker didn't bring it in himself, then it must have been brought in by the ghost. But, could a ghost that had only been dead for a year truly possess so much Spiritual Power?
Qin Sisi was very puzzled. It seemed that to truly understand this matter, she would have to ask the person involved directly.
With everything she wanted to know clarified, Qin Sisi gave a slight smile to the department head and said, "I'm very grateful that you shared this internal information with us. The past events are over now. This restroom has returned to normal and can continue to be used. The school won't have to worry about this matter anymore."
The department head once again eyed Qin Sisi and cautiously asked, "Could I ask...what exactly is your occupation?"
Qin Sisi briefly thought before answering, "I am a Mage—a Mage who catches ghosts."