[Introduction to the novel]:
During the day, Han Mo is the most lonely tombkeeper in the cemetery management office. No one knows that every time the clock strikes midnight, he will transform into the courier of the Underworld Express Mail. Couriers from the underworld are sent to the designated people in the underworld, and the price is collected to achieve the obsession.
The ghost king wants to send a bowl of Meng Po soup to his first love, the resentful spirit wants to send a divorce agreement to the husband who betrayed him, and there are even civil servants from the underworld shopping online for the latest mobile phones in the world... Han Mo shuttles between the Yin and Yang worlds expressionlessly, never meddling, only responsible for delivering the goods.
Until one day, he received a special delivery - the recipient was himself. The shipping address is blank, and the sender's signature is: Han Mo. The moment he opened the courier, he saw his diary from ten years ago, which read: "Is the me today resurrected from the one who died yesterday?"
This express delivery revealed his unknown past and attracted the covetousness of all forces. Some people want to dig out his secrets, some want to snatch his abilities, and some are secretly planning a conspiracy that can subvert the Three Realms. And Han Mo, the most underestimated underworld courier, is about to make the whole world tremble.
