1. Characters and martial arts: some characters and martial arts were deleted from the old version, such as Wei Xiaobao and Jiu Nan; The new edition deleted these characters and martial arts again, and added new characters and martial arts.
2. Plot description: There are differences between the old version and the new version in some plot descriptions. For example, in the old version, Chen Jinnan had higher martial arts, but let the leading Qing soldiers escape, but this description was deleted in the new version.
3. Year number problem: There are also differences between the old and new versions in dealing with the year number problem. The old version has a more detailed description of the politician's intention to revise the year number.
To sum up, the three versions of The Duke Of Mount Deer are different in characters, martial arts, plot description and year number.