Prompt: Since 1995, the national fitness program has become a grand project with goals, tasks and measures initiated by the government, supported by the society and participated by the whole people. With the effective implementation of this project, and in order to publicize and promote national fitness, the Knowledge Series of National Fitness Activities has selected several major ball games with wide mass base and high popularity, providing readers with systematic and practical sports knowledge and fitness methods, and striving to integrate the times, knowledge and appreciation.