Historical note: Jardine & Matheson were real people and played very much the same role in real history that they are playing when they show up in this book. Their company, now just "Jardine Matheson", still exists, still has a large footprint in Hong Kong, and did very well out of Britain's abuse of China. If you don't know the history and don't want spoilers then I'd wait until a couple of chapters after they're introduced to look them up. Though I'm also assuming that somewhere after where I've reached, the book must diverge from the real history.

Karl Gützlaff was also a real person whose attitudes seem to be faithfully represented in the book, though I don't know enough about him to know how historically accurate his actions in the book are. #SFFBookClub