1, People's Health Publishing House, official website: You can log in to People's Health Publishing House, official website, and find the corresponding textbook PDF in the textbook download area of official website for downloading. This is the most direct way, but it should be noted that the textbooks in official website have copyright problems and there will be download restrictions.
2. National Digital Library: The National Digital Library of China is an electronic library, which contains teaching materials, newspapers, papers, ancient books and other resources from many publishing houses such as People's Health Publishing House. You can search the teaching materials of People's Health Publishing House on this website, and then read or download the corresponding PDF version online.