I can't provide accurate information about the top 500 national publishing houses because my knowledge deadline is 2021 and I don't have the ability to browse the Internet. But generally speaking, the top 500 publishing houses in the country referred to large-scale publishing houses with high reputation and influence in the publishing industry. The following are some of the top 500 well-known publishing houses in the country: People's Literature Press China Social Sciences Press 3 Commercial Press Tsinghua University Press Peking University Press Lijiang Press China Youth Press China International Radio Press Foreign Language Teaching and Research Press Shanghai Translation Press Of course, these are just some examples. There are many other publishing houses that are also among the top 500 in the country.