Where is the custom of keeping mother cakes?

"Mother-in-law cake", also known as "leap moon cake", is not good for mother's health for more than one month in a year. It refers to the flower cakes made by children to please their mothers.

It means that people with daughters will send flowers and cakes to their mothers in leap months, March and April. Folk call it "mother cake", which means that I hope my mother will live a long and healthy life and stay with my daughter forever, which means health and longevity.

"In the leap month year, stay in the mother year." There has been a folk saying since ancient times that leap month has been harmful to mother's health since ancient times. "Mother-in-law cake", also known as "leap moon cake", is not good for mother's health for more than one month in a year. It refers to the flower cakes made by children to please their mothers.