There was some profanity and one suggestive scene where Xiaolong described pictures taking of Zhou and his mistress which is why I took away 2 stars. I cannot stand cursing and really dislike sexual content.
Other than that the book was easy to read and interesting. It did have an open ending, which usually bothers me, but I didn't mind all that much in this case. If you dislike them though you might not like this book.