Before he died, my grandfather held my hand and said with a tight mouth: "Our Chen family has guarded the well outside the north gate of Fengdu for generations. Remember, on July 14th every year, we throw three kilograms of paper money into the well and write clearly that the recipient is the 'Hubu Department of the Underworld'. If one day we forget..."
He left before he finished speaking.
This year I forgot.
It's now 1:23 in the morning on July 15th, and someone knocks on the door.