the parents or grandparents buy them for the girl for her first Festival of the Dolls.
There is a superstition that if the dolls are not put away very soon after 3rd March, the daughter will get married late.
The special dishes for the festival include diamond-shaped rice cakes. They are coloured red (to chase evil spirits away) white (for purity) and green (for health).
The Festival of the Dolls originated from an ancient practice where the sin of the body and misfortune are transferred to a doll, and then removed by abandoning the doll on a river.