Third Uncle Nan's physical book of " Sea of Sand " and the online version should have different contents. Although Third Uncle Nan Pai had tried many times to adapt the copyright of his online novel, the content of his novel could not be guaranteed to be exactly the same as the online version because copyright issues might lead to some limitations on adaptation. As far as " Sea of Sand " was concerned, there might be some differences between the physical book and the online version. For example, a physical book might have more detailed typography and illustrations, and might contain some additional notes and explanations. In addition, the readers of the physical book might be more inclined to professional readers while the online version was more inclined to ordinary readers, which might also lead to some differences in content. Although there might be some differences between the physical book and the online version, Third Uncle Nan Pai could make it easier for readers to read his novels online by inserting online reading links in the physical book.