Intertextual writing is a long established writing practice, which refers to the fact that when an author creates a specific text, other textual resources are used explicitly or implicitly. The English novel The Red Chamber written by Pauline Chen is a typical case of intertextual writing in that the author makes use of many other textual resources when she is creating the novel. And among them Hong Lou Meng is its most prominent intertextual resource, or rather its parental novel. This paper, taking Hong Lou Meng as a comparison, introduces and analyzes the The Red Chamber from four intertextual perspectives, namely, the variation of the fictional plots, of character images, of hidden themes and of intertextual resources.