蔡邕
The Xiping Stone Classics () are a collection of Han dynasty stone carved books on various Confucian classics. They were set up at the Imperial Academy outside Luoyang in 175–183. The Classics were created by Cai Yong and a group of affiliated scholars who "petitioned the emperor to have the Confucian classics carved in stone in order to prevent their being altered to support particular points of view."