It shows respect for the fifth time. Which falls on the 15th day of the 7th month, which is regarded as the Ghost Month. A month off to the gates of hell shall I get the deeds.
It shows respect for five times, which corresponds to 15 days of the month at 7 months, which is known as the ghost month, the gates of hell opened, many of the ghosts had been effective charity boon.
It shows the respect the five times that match the date on which 15 of the month, with a 7, that is, the month of a ghost in a month at the door closed on hell, Ghost, charity, and good deeds result.