The Four Immortals
The Four Immortals refers to the four chief cult figures in the pantheon of genii worshiped by the Vietnamese people of the Red River Delta region. They are Tản Viên Sơn Thánh, also known as Sơn Tinh the god of Tản Viên Mountain, Phù Đổng Thiên Vương a giant who defeated northern invaders, Chử Đồng Tử a sage, and Princess Liễu Hạnh, a heavenly spirit and Mother Goddess.
Full development of the mythology and honouring of the Four Immortals took place in the Lê Dynasty. Each of the four immortals has association with helping historical national figures. For example, Thánh Gióng in legend helped the sixth Hung King to repulse foreign invaders.