sentences:  Most Caodaiists choose to go on a pilgrimage to Tay Ninh Holy Land on this day.Hội Yến Diêu Trì originated in an event in 1925 when Cao Quỳnh Cư, Phạm Công Tắc and Cao Hoài Sang, through spirit communications, could contact with many spirit entities.First, they got messages from their deceased relatives, then the Goddesses, and eventually God.