The version of "Water Margin" used in the test is the "Outlaws of the Marsh" by Luo Guanzhong, which is the most widely recognized and translated version in the English-speaking world. This version, first published in the 14th century, is the definitive text for the novel and has been the basis for numerous adaptations and translations. The choice of this version is due to its historical significance, widespread availability, and the depth of its narrative and characters.

The "Outlaws of the Marsh" is the most complete and authoritative version of "Water Margin," containing all 120 chapters and providing a comprehensive view of the story. It has been translated into English by multiple scholars, with the most famous translation being by Moss Roberts, which has been used in various academic and educational settings. The Roberts translation is particularly favored for its readability and faithfulness to the original text.

Data supporting the use of the "Outlaws of the Marsh" version in the test include the fact that it has been the standard text for English-language studies of the novel since the early 20th century. For instance, the translation by Roberts has been used in numerous academic publications and is often the version referenced in scholarly works. Additionally, the "Outlaws of the Marsh" is the version that has been adapted into various forms of media, including films, television series, and video games, making it a familiar and accessible text for a wide audience.

The choice of the "Outlaws of the Marsh" version is also based on its literary and historical value. Luo Guanzhong's novel is a cornerstone of Chinese literature, offering insights into the social and political landscape of the Song Dynasty. The novel's exploration of themes such as loyalty, justice, and the struggle against tyranny resonates with readers across cultures. The use of this version ensures that the test accurately reflects the original intent and depth of the work, providing a comprehensive understanding of the "Water Margin" narrative.