I came to Water Margin (the traditional title of what these translators call The Marshes of Mount Liang) as a student of storytelling. I kept hearing that manga (Akira, for example) are heavily influenced by the classic Chinese novels (especially The Journey to the West), and that clue suggested to me that it might be time to look at the sources for myself. Also, I'm a sucker for "classics." As soon as I saw the list of The Four Classic Chinese Novels, and realized I'd only read one of them, well...
This monster novel (120 chapters, in five volumes) is interesting, but not very engaging for the reader of modern novels or short stories. It was meant, it seems, to be read and performed, with musical accompaniment to support the bad poetry, and with breaks between chapters for meals and drinking or a good night's sleep. The chapters aren't structured like short stories, so they don't come to satisfying endings. They generally end in cliffhangers, with a sentence luring you to come back after tea for the next performance. The whole isn't a structured novel, either.
The structure is episodes, with martial arts duels and chase scenes and robberies. The technique reminds me of soap operas, which are just a series of self-closing melodramatic confrontations, which the viewer can pretty much fully understand without any additional context. Water Margin is (based on my 22 chapters of experience) a seemingly endless series of Robin Hood episodes, in which outlaws confront government officials and generally come out on top; or in which citizens get screwed by corrupt government officials and become outlaws. The gist of the novel is that all these outlaws are slowly gathering on Mt. Liang.
Robin Hood is a good comparison, because it has led to countless imitations and retellings, TV series, movies, comic books, and on and on. But the truth is that the story of Robin Hood is dang thin. The characters aren't deep, or terribly conflicted, nor are there many memorable events in the standard storyline. There is no sword in a stone, no Holy Grail (unless that gets imported from Arthur). There's just a Bad King, and his Bad Sheriff, and some woods. But by the time you're twelve you've heard or seen enough versions of the story that you can comfortably slide into experiencing another episode of Robin Hood, knowing it won't be consistent with the ones you've already seen, but you'll have a pretty good idea who the good guys are, and who the bad guys are, and there will probably be a chance for you to be surprised by an imposter.
Now in this case imagine the same structure, but we have lots of Robin Hoods and lots of Little Johns and lots of Will Scarlets, and a number of fighting Friar Tucks, whose stories are all pretty much the same, but with maybe one famous episode apiece. And imagine that the audience will, by the time they were twelve, have heard the whole thing five or six times, so that they are now comfortably projecting more onto the characters than is actually in the text. The characters are old friends, the episodes are remembered, at least vaguely, by repetition rather than originality. That's Water Margin.
Your modern reader, though, isn't going to have that comfortable sense when reading the story for the first time. It's a lot of names, it's a lot of increasingly similar episodes, and there is no clear plot.
The inciting incident is that a bumbling Imperial Marshal doesn't listen to warnings, and opens up a temple chamber in which 108 demon princes are sealed, and lets them loose. He was trying to stop a plague that was sweeping the kingdom, but instead he makes things worse. In this volume that's the last we hear of the demons, and we shift to the individual story episodes. Now one way to interpret the demon episode is that each "hero" that ends up on Mt. Liang is actually one of these demons; but that isn't made clear. Or it could be that the demons have infected the government, and that's why it's okay to cheer for the bandit characters, who are lining up against the demons of Government. We'll see.
I should say that the bandits in this story are not just taking from the rich and giving to the poor. They do that some of the time, but they are also organized criminals and frequent bad actors. Oh, gee, he got drunk and killed a bunch of innocent people again. What a character, eh!?
One last impressionistic remark. While there are government characters who seem to be trying to act responsibly, the presumption of the narrative is that Bureaucrats Are Bad, that All Government Is Oppression, and that the world should be seen through the free-floating paranoid viewpoint of a teenage boy. Much the way that the Marvel Comics Universe and DC Comics Universe movies work; where there are lies behind lies, and characters change sides, and then rejoin, and we don't care all that much.
And, after a while, it all seems pretty much the same. With fight scenes.