Qiu, a first-class Chinese word. The original meaning of the word is beautiful jade. Guang Yun: "The ball is beautiful jade." . In Shuo Wen Jie Zi: "Ball, Jade Qing (an ancient jade musical instrument) seeks sound from jade." Pronounced ball (qiú). Later, it was extended to an absolutely regular circular three-dimensional object, such as sports ball supplies, which was also pronounced as "ball" (qiú).