The couplet written by Gu Xiancheng, the leader of Donglin Party, is striking in Donglin Square of Donglin Academy. Yang Shi, the founder of Donglin Academy, was Cheng Hao, a Neo-Confucianist of the Northern Song Dynasty, and a disciple of Cheng Yiyiyi, whose story "Chengmen Lixue" came from him and his teacher.