He said he heard that at a forum at the Beijing International Book Fair.
Potash praised the fair for bringing new and advanced thinking to the global publishing business.
Thirty years after it was founded in 1986, the fair has become the world's second-largest book fair in scale, and is turning into an international reading festival instead of merely a platform for copyright trades, its organizers say.
"The book fair keeps its advantages for the professional audience, and strengthens its attractions to general readers with better experience and interaction," says Lin Liying, vice-president of China National Publications Import & Export (Group) Corporation, one of the BIBF organizers.