A delivery order note saying "Don't knock," a courier who never made it back, and a list of delivery workers who died under suspicious circumstances or went missing.
According to statistics, China has more than ten million food delivery riders. They weave through the city at dawn and on rainy nights, delivering hot meals right on time, while also witnessing the city's hidden corners.
And among those ten million, someone has discovered that their name is already written on a wall.
