To say that during the Warring States Period, I'm afraid only Gong Xue, Xia Ji of Qi, can really meet this condition. Gong Xue, Xia Ji is the earliest and largest national university in the history of China, and the earliest ideological, academic and cultural center integrating higher education and academic research in the world. In Qilu, the style of writing prevails and a hundred schools of thought contend. It is his greatest pleasure to talk with contemporary celebrities in Gong Xue, Xia Ji. As for the others, I'm afraid different schools can argue on the spot if they have differences of opinion anywhere, so forget it, and the list goes on.