Lecture Hall Introduction: In the second year of Chunxi in the Southern Song Dynasty, famous Confucianists such as Zhu Xi, Lu Jiuling, Lu Jiuyuan, and Lu Zuqian gathered here to debate the principle of "Xingli", which became a far-reaching event in the history of Chinese Confucianism. . In order to commemorate the "Meeting of Ehu", people built the "Four Sages Temple" behind the academy.