This building was situated on the inland side of the six-lane avenue that ran along the waterfront. Across that avenue was an arcade of ferry terminals that stretched along the shore for at least a kilometer, fronting on a waterway that was as busy as any that Sokolov had ever seen. Because he had been looking at maps, he knew that this body of water was a strait separating Xiamen from a smaller island about a thousand meters away, but it was impossible not to read it as a river: a mighty river like the Volga or the Danube. But the docks were linked to the terminals by hinged gangways, confirming that this water was salt and that it rose and fell with the tides. Plying the strait was an astoundingly dense and various traffic, ranging from skiffs up to freighters, but dominated by two types of craft: tubby, double-decker passenger ferries, and a type of vessel that he hadn’t seen before but that was evidently the traditional working craft of these waters: an open, flat-decked boat rising no more than a meter above the waterline, shingled along both sides with old tires, averaging maybe ten meters long, with a little boathouse, or at least an awning, toward the stern, sheltering the engine, the steering gear, and the operator. These were so densely packed in some areas that it was a wonder they could move at all, and each was carrying something different: passengers, a drum of lubricant, a pallet of shrink-wrapped cargo, a cooler packed with ice and fish. Weaving and zipping among these larger, slower vessels were white speedboats carrying passengers in orange life vests: fast water taxis for the well-heeled, he guessed. Some of them were headed directly across the strait to the little island, which was steep and green and seemed to consist largely of parks and villas. Obviously it was older and more affluent than the suburbs that Sokolov could see reaching toward Xiamen from every direction, difficult to resolve through the haze, but much more heavily built up.