百家讲坛
In 2005, Yi appeared on CCTV-10's "Lecture Room" programme. His series of lectures on personalities of the Han dynasty and the Three Kingdoms period were successful, but there was also criticism about the academic quality of his lectures. Due to the popularity of his lectures, in 2006 CCTV-10 made a contract with him to produce a series of 52 lectures on the history of the Three Kingdoms period. In 2008, he started a series of 36 lectures about the Hundred Schools of Thought on "Lecture Room".