White day refers to March 14 every year, which is generally considered as a continuation of Western Valentine's Day and originated in Rome in the third century.

Generally speaking, boys will give gifts to girls in February of 14, but after a month's investigation, in white day in March of 14, if girls return gifts to boys, it means that girls recognize boys and can fall in love.

White is chosen because it is a pure color, which can arouse "pure and sweet youth love" and because it is also the color of sugar. Formerly known as "Aini Cotaru Daytime" (Daytime answers love).

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According to legend, white day originated in Rome in the 3rd century. It is said that the Roman emperor set up Valentine's Day to commemorate that he saved a couple who were about to be executed for violating the marriage ban in February 14. A month later, in March of 14, the husband and wife vowed to be at loggerheads, which later became a day and spread to other countries.

1977, Shi Cun Wanshengtang of Fukuoka Candy Company sold cotton candy to men on March 14, which was called "Cotton Candy Day". Since 1980, the sugar used in candy is white, so it was renamed as "day".

White day gives gifts in different regions in different ways: in Chinese mainland, Britain, the United States, French and other countries, in February 14, the man gives the woman a gift, in March 14, and in white day, it is her turn to give the man a gift. But in Japan and Taiwan Province Province of China, the situation is just the opposite. February 14, girls give gifts, March 14, boys return gifts.