Honestly, I'm 85% of the way through it, and the whole thing has been an absolute slog.
I'm really not getting what people see in it. For me it feels a lot like old Isaac Asimov scifi; great ideas, really cool big concept stuff, but absolutely flat characters and uninteresting prose. The main character is just a whiteboard for other characters to explain things on. Every other character is utterly forgettable apart from Ye Wenjie, who gets the bulk of the development but is, backstory aside, largely ancillary to the plot.
And the structure and plotting just kind of fall apart once you get the main reveal. Like, there's some degree of interesting mystery at first, but then it just builds to a big meeting where a bunch of random people explain the plot to each other for the benefit of the main character and the audience. And then we're very hurriedly introduced to a another antagonist so the book can have an ending.