Flag of Earth tour through Europe. The Universal Peace Congress adopted this flag as its World Peace Flag. Designed by Pierre de Coubertin in 1914 and adopted in Olympic games since 1920, the Olympic flag represents all mankind and has a white bar with 5 interlocking rings of 5 colors. The five rings represent the five continents. The six colors (including the white color of the background) represent all of the world's nations. The World Citizen is a social movement for global citizenship under a proposed world government. In 1953, one of its activists, Garry Davis, founded the World Service Authority, which sells
Iron rings Iron rings Iron rings are heavy metal rings used in martial arts for various training purposes. Metal rings have a long history of being used in Yau Kung Mun, Hung Gar, and other styles for weight training, to harden the muscle, skin, or bone, or strengthen the arms and fists. Many different types of rings are available. The "Chi Sau Ring" is used for conditioning the body in many stances, and exercises. Four-inch-diameter () "Chi Sau Rings" weigh 600 g; iron rings weigh 800 g. Some iron rings are sold in sets, such as two small and two large rings.