I'm not a fan of online novels, but I can tell you some information about the best-selling mainland novels in Hong Kong. According to my understanding, some of the popular mainland books in Hong Kong include To Live, The Story of Xu Sanguan Selling His Blood, The Little Prince, Dream of the Red Chamber, etc. These books are usually sold in bookstores and online bookstores in Hong Kong and are the first choice of reading materials for many readers.