"Qiaopi", also known as "foreign batch", refers to the silver letters sent by modern overseas Chinese through privately operated Chinese post offices back to their homeland. This practice thrived from the late Qing Dynasty to the Republic of China, eventually being supplanted by the modern financial industry in the 1970s. With profound cultural significance and high historical value, Qiaopi can be likened to the "Dunhuang Documents" of Chinese overseas history.
