This involves many reasons, such as the program editing planning of Lecture Room and Lan Yanling's academic direction. Lecture Room is a literature and history program of China CCTV, which aims to introduce and inherit the traditional culture of China, including history, literature, art and philosophy. In the program, each lecturer has his own specialty and depth. After careful selection by the program group, he was invited to participate in the program, which officially made outstanding contributions to the cultural heritage of China. The program direction of Lecture Room is clear, and the selected academic background and explanation content are also scientific and comprehensive. Although Lan Yanling has profound academic attainments, his academic direction deviates from the purpose of Lecture Room, mainly focusing on the history of Ming and Qing Dynasties, but lacking in other aspects. This may be one of the reasons why he didn't go to the lecture hall. As a famous historian, Lan Yanling's academic achievements and contributions should have little to do with media resources such as lecture halls. His value lies in his academic research and achievements, and should not be limited to the exposure of a certain media platform.