Lin Mo is a delivery boy and has been running around the city for three years. He is familiar with every alley, the back door of every community, and knows which office building has the hardest wait for the elevator during the midday rush hour. Life is electric cars, orders and navigation routes. Until that rainy night, he took an order for takeout near an abandoned funeral parlor on the edge of the city. The order note read: "Put it at the door, knock three times, and don't look back." He did so, but when he left, he had an old five-dollar note in his pocket that he had never seen before, and it was cold to the touch. The next day, the order from the same address appeared again, this time with the note: "Submit it in person, he will thank you."
