Jin Yong's works were one of the classics of Chinese literature. His novels were widely spread and loved by readers. Reading different versions of Jin Yong's works can bring different experiences and feelings, but whether it is necessary to read all three versions depends on personal interest and reading purpose. Jin Yong's works include seven novels: The Legend of the Condor Heroes, The Return of the Condor Heroes, The Eight Dragons, The Swordsman, The Sword of the Blue Blood, and The Deer and Cauldron, as well as his short story, The Sword of the Yue Woman. The quality and style of these versions are different. Some versions may be more faithful to the original, while others may be more adapted and modern. If one was interested in Jin Yong's works and wanted to understand the plot and characters in the novel, it might not be necessary to watch all the versions of Jin Yong's works. However, if you just want to enjoy the story and language of the novel, you can choose the version that you are interested in or only watch one or two versions. Reading different versions of Jin Yong's works can bring different experiences and feelings, but whether it is necessary to read all three versions depends on personal interest and reading purpose.