Finished Heart of Iron by Ekaterina Sedia.
After readin The Secret History of Moscow, and The Alchemy of Stone, I thought that Sedia was one of those authors who reliably publish highly imaginative and interesting novels. Unfortunately, it turns out I was wrong, as this one is very disappointing.
The heroine, Sasha, is a terrible Mary Sue, to whom the most unlikely and nice things happen on her dangerous, solitary journey to China. Everytime she gets a bit stuck, immediately there's a bunch of Chinese kung-fu artists, convenient rough but hearty hussars, her aunt, or Jack around. Through all her adventures, she's still arch-conservative, and despite everything sees women in general, her servants, and the Chinese as second-rate humans, and still has unquestioning faith in the Czar and Christianity. There's just far too little introspection in her.
Talking of Jack...so, totally randomly, Spring-heeled Jack appears in St. Petersburg. Now, if there had been any kind of indication, that there's more of these mysterious supernatural creatures about, and that they're all spying or working for Queen and country, that might have made his presence a bit more logical. But as it is, he's totally random, and the story of how he got his powers is a bit weak too. Then again, he tells that, so it might not be true.
There only seem to be about a dozen people in the world, because she keeps running into all of them, all the way from Petersburg to Beijing. Especially annoying is Florence Nightingale, who, in this version of history, is not a gentle nurse, but a sadistic spymistress with bad manners and the habit of showing up all over the place.
In addition to that, the pacing is pretty bad. The beginning, her first semester at university, is still quite ok, but once she embarks on her rather silly endeavour to save the world, there's just about 150 pages of train scenes, problems, running into unexpected friends, fighting, more train, and so on. The resolution happens in the last 30 pages of the book, via auntie ex machina.
As if that wasn't enough...technology. Ok, tech is a bit more advanced in this timeline, because the Czar's brother is now Czar instead of him (?!), so they have submarines, the Transsiberian Railway with very regular service 50 years early, and airships (which would also a bit early, but that's beside the point, as they're not actually airships, as they don't have balloons, they're ornithopters.)
Now, in reality, no matter which timeline, a giant, metal ornithopter like the one in the book simply wouldn't work, unless aerodynamics and gravity are radically different over there. Such things annoy me. Professional deformation. I have no clue about submarines, otherwise I might rant about those too.
In conclusion: pretty boring, unrealistic plot with a really Sue-ish protagonist.
4/10