The Last Bus from the Underworld

Liu Tang, a graduate of a third-rate university, joined the subway department as a night-shift attendant. But after starting work, he discovered that the place was full of strange happenings! A cleaner who didn't exist, a station that shouldn't be there, paper figures that appeared and vanished without warning. Where was this subway line really headed? Caught in the whirlpool, Liu Tang had no choice but to delve into the mystery and uncover the truth. But when the truth finally came to light, who was human, and who was a ghost?!