Li Yizhou gained attention due to his AI course generating 50 million in sales revenue but recently chose to quietly take the course down. After some viewers investigated, they found potential issues with Li Yizhou's course and questioned its professionalism. Although Li Yizhou claims to be a Tsinghua PhD, he did not actually graduate in AI. The core keywords include design, AIoT, and others. Li Yizhou's identity is from Tsinghua University's Academy of Art and Design and is unrelated to AI or deep learning fields.