Introduction to the culture of ritual and filial piety: The Hall of Filial Piety is on a three-story high platform, surrounded by a 7-meter-wide circular pool outside the hall. It is connected to three large platforms that gradually move in from bottom to top through four bridges. Under the high platform is a place to promote the culture of filial piety among the four women, and its main function is to spread the culture of filial piety.