Time: The 1st day of the second lunar month and from the 11th day to the 12th day of the sixth lunar month.
Place: Duc Bac Commune, Song Lo District, Vinh Phuc Province.
Objects of worship: Thanh Ong, Princess Bat Nan (General of Hai Ba Trung) and the ancestor of xoan singing.
Characteristics: Cau dinh ceremony (pray for giving birth a son), racing boats to Phuong Lau (the other bank of the river) then striking for the basket of rice (or sheaf of rice seeds) and return, xoan singing (folk song of Vinh Phuc - Phu Tho Provinces).