Time: 5th to the 7th day of the fourth
lunar month and the 13th to the 15th day of the eleventh lunar month.
Place: Lien Ha Commune, Dong Anh District, Hanoi.
Objects of worship: Mr. Dinh Du and his wife, Mrs. Man Hoa Duong (taught
a dào singing).
Characteristics: Ancestor of ca trù 's death anniversary with
sacrifice-offering ceremony and singing, dancing.