The origin of Hinamatsuri is an ancient Chinese practice in which the sin of the body and misfortune are transferred to a doll, and then removed by abandoning the doll on a river. A custom called "hina-okuri" or "nagashi-bina," in which people float paper dolls down rivers late on the afternoon of March 3rd, still exists in various areas.
March 3 is Hina Matsuri (Doll Festival or Girls' Festival), when people pray for the happiness and healthy growth of girls. Families with young daughters mark this day by setting up a display of dolls inside the house. They offer rice crackers and other food to the dolls.