The following types of online novels could be recommended: 1. Fantasy novels: " Battle Through the Heavens,"" Martial Arts,"" Choosing the Heavens," etc. These are the most popular online fantasy novels that have been published in physical books and are very popular. 2. Romance novels: For example," Why the Silent Flute?"," A Smile Is Alluring?"," Shanshan Is Here ", and other popular online romance novels have been published in physical books and are highly sought after by readers. 3. Cities: novels such as Hua Qian Gu, Chu Qiao Biography, Three Lives Three Lives Ten Miles Peach Blossom, etc. were all popular urban works that had been published in physical books and were loved by readers. 4. History: novels such as Ghost Blows Out the Light, Grave Robber's Chronicles, and Ordinary World are all popular historical works that have been published in physical books and are very popular with readers. Of course, the works of different authors and publishing houses would be different. You could choose a work that suited you according to your preferences and needs. In addition, when buying physical books, you can pay attention to the publishing house, the quality of the printing, and the recommendations of the bookstore to get a better reading experience.