1. His live broadcast style is humorous, and he will also show fans a lot of historical knowledge, which is enough to attract fans, so he may feel that it is unnecessary to show his face.

2. He is an UP master with rich historical knowledge and excellent video production. He may think that the key to attracting fans is his content and talent, not his appearance.

He may want to keep some privacy.

Please note that the above is only speculation, and the specific reason may only be known by little John Khan himself.