Old Nine Gates was a very popular grave robbing novel written by Er Yuehe. Currently, there is no complete set of the novel, but some versions of the novel have been published and can be found on some online reading platforms. Among them, the more well-known versions included the first, second, and third volumes of Old Nine Gates, as well as the parts of Nine Gates Admiral and Ghost Blows Out the Light. You can search for the complete works of Old Nine Gates on some novel reading websites such as Qidian Chinese Network, Xiaoxiang Academy, etc. However, it is important to note that there may be some differences between different versions. I suggest you carefully read the comments and reader feedback before reading to better understand the plot and characters of the novel.