"No, the homework wasn't you..." The girl seemed to have had her secret exposed. Clutching a thick stack of homework, she ran upstairs.
"Don't go!" Gao Ming followed her. "I noticed you're different from those Ghost Students. They're all doing everything they can to disguise themselves as humans, making themselves look as ordinary as possible. But you look unusual. Anyone can tell at a glance that you're different."
Gao Ming grabbed the girl's arm. It was slender, fragile, and weak, and he could feel its warmth.
"You're human? A human helping ghosts?" Gao Ming confirmed his suspicion and dragged her into a corner. "I won't blame you. Everyone has the right to fight to stay alive, whatever means they use. I just want to ask you a few things."
The girl looked miserable, as though she had endured a great deal of torment. She was a living person whom the ghosts had accepted. It was hard to imagine what price she had paid for that.
"How long have you been at this school?"
Faced with Gao Ming's insistent questions, the girl kept shaking her head, clutching the homework tightly.
"What are you afraid of? How about I take you out of the office building?"
When she heard that Gao Ming wanted to take her out of the office building, the girl shook her head even more frantically. "I can't leave the office building! Absolutely not!"
Knowing Gao Ming would not let go easily, the girl led him into the men's restroom on the second floor. She closed the restroom door, then hid with him in the fourth stall.
"Four is the luckiest number in this school. Follow four, and you'll have good luck." The girl held the homework carefully, terrified of getting it wet.
"Four is a good number? Does