Hong Kong Free Press reported that the new book Frontline Hong Kong 1997–2020, published by the American writer Kent Ewing was originally scheduled to be released in September this year. However, the Hong Kong bookstore chain Bookazine banned the sale of related books. After the law, the bookstore hopes to keep a low-key stay 'under the radar', so the book will not be stored in the store for sale. The publisher Form Asia also sent an email to the author in September, stating that based on a series of reasons, it decided not to publish the book and was eventually cancelled. The author Kent Ewing published an article in Hong Kong Free Press, saying that the book covers the 1997 handover, three generations of chief executives and the 2014 Umbrella Movement, etc., describing the book as ill-fated.