A collection of Confucian classics carved into stone steles during the reign of Emperor Ling of the Eastern Han dynasty, specifically between 175 and 183 AD. Written in clerical script by scholars such as 蔡邕 cài​yōng, these carvings established the first official state version of the Seven Classics. Originally erected at the Imperial Academy in Luoyang, they are also known as the 一体石经 yī​tǐ​shí​jīng or 汉石经 hàn​shí​jīng.