Range of Ghosts has some fascinating world building wrapped up in an intriguing plot full of adventure and politics. The novel is set along “the Celadon Highway” a kind of analog to the historical Silk Road that linked most of Asia together with much of Europe in trade during the 12^th and 13^th centuries. An especially interesting aspect of the world building is that each empire or polity in Range of Ghosts has its own sky with radically different astronomical features. (As an example, the sky in Re Temur’s homeland has about a hundred tiny moons that each represents one of the male heirs of the Khagan, or “khan of khans.”)