Sounding stone

A sounding stone or c=磬 is an ancient Chinese musical instrument, usually L-shaped. The set of is called bianqing. The shape of such stones was often quoted as description for the reverent ritual pose.
Important information on nomenclature is contained in the Erya dictionary: the large sounding stone was called 毊, and a solo performance on, 寋. However, the mentioned names do not have much currency in the classical literature.
is mentioned in the Analects as one of the instruments played by Confucius.
In the Han dynasty treatises on music, its sound is referred to as "reminding the monarch about his officers who died while protecting the borders".