In order to protect the health and happiness of boys at home, every household in Japan will make colorful ribbons in the shape of carp with paper or cloth on May 5 every year, and then string these ribbons on bamboo poles, tie them together with golden windmills and hang them on the roof. The reason for saying this is that the Japanese think carp is the most energetic and energetic, and hope that all the boys at home will be like carp, so this day is also called "carp day".
The custom of boys' day
The Dragon Boat Festival is the same as the Boys' Day, so every family sticks calamus leaves on the door, and hangs Zhong Kui to exorcise evil spirits and eat cakes (called "cypress cakes") or zongzi at home. "Acorus calamus" is homophonic with "martial arts", and "carp flag" means carp yue longmen. The carp flag is a hollow carp made of cloth or silk. There are three colors: black for father, red for mother and blue for boy. The number of blue flags represents the number of boys.
The Japanese believe that carp is a symbol of strength and courage, expressing parents' desire that their children and grandchildren become brave and strong soldiers. According to the principle of "respecting children's personality, seeking children's happiness and thanking mothers", this day was designated as a national public holiday.