How about Teacher Geng Chunhui teaching photography?

His story is very rich, which stems from his years of work as a field leader. He once walked through China alone from south to north, and he once walked through Qinghai-Tibet almost penniless. Participated in the topic selection planning of China Electric Power Press, Chemical Industry Press, People's Posts and Telecommunications Press, China Photography Press and other well-known publishing institutions, and was specifically responsible for the drafting and planning of bestsellers such as The Secret of Digital Photography.