Anqing people like to move in the middle of the night and set off firecrackers, how did this custom come about? What is the origin?

Anqing people like to move in the middle of the night, and firecrackers, the source of this custom is a little twisted, since ancient times, the Chinese people migrate and move property for fear of dew, in conditions are late at night to relocate, meaning that the property does not show white, but the release of firecrackers is the evolution of a wrong in recent years, reverse practice, especially in the cemetery whip is not to think of the twisted practice of shame but for the honor, counterproductive to say that he is.