The fifteenth day of the seventh month of the lunar calendar, which is Ghost Festival, is also known as "Filial Son Day." This is because, although when the Emperor Shun was young his mother died and he was badly treated by his father and stepmother, he nevertheless became renowned for his continual filial piety to his father.
農曆七月十五中元節，又稱「孝子節」，因為地官舜帝早年喪母，飽受父親及繼母凌虐，卻仍然事親至孝而得名。