In Japan, Koi is a symbol of the strength, courage, and patience. According to Chinese legend, if a koi fish succeeded in climbing the falls at a point called Dragon Gate on the Yellow River, it would be transformed into a dragon. Based on that legend, it became a symbol of worldly aspiration and advancement. Children's Day (こどもの日 Kodomo no Hi) is a Japanese national holiday which takes place annually on May 5 and is the final celebration in Golden Week. It is a day set aside to respect children's personalities and to celebrate their happiness. It was designated a national holiday by the Japanese government in 1948. It has been a day of celebration in Japan since ancient times. In this day, families raise the koinobori, which are carp-shaped windsock (carp because of the Chinese legend that a carp that swims upstream becomes a dragon and flies to Heaven, and the way the windsock blow in the wind looks like they are swimming), with a black carp for the father, a red or pink for the mother, and one carp (usually blue, and sometimes additionally green and orange) for each child. Traditionally, when celebrated as Boys’ Day, the red koinobori was for the eldest son with blue and additional colors for younger brothers. Families may also display a samurai doll, sometimes riding on a large carp (often representing the Japanese folk heroes Kintarō or Momotarō), and/or the traditional Japanese military helmet, kabuto, due to their tradition as symbols of strength and vitality.