Table tennis is China's national sport. China has dominated Olympic ping-pong since it was added in 1988, winning the majority of gold medals. The phrase 国球 (guóqiú, 'national ball') refers to it.
usage
The full term for the sport is 乒乓球 (pīngpāngqiú). 乒乓 alone is onomatopoeia or a casual shortening.
