The earliest known Chinese stone inscriptions, carved onto ten drum-shaped stones during the Eastern Zhou period in the state of Qin; the text consists of four-character poems and is now kept at the Palace Museum in Beijing.

An early calligraphic style used in the Stone Drum Inscriptions, representing a transitional form between 大篆 dà​zhuàn and 小篆 xiǎo​zhuàn.