It was by far the largest island in the bay, with the exception of one, farther from the mainland, that rivaled it in size if not in population. For the round island of Xiamen was almost entirely developed, only the steepest bits in the interior remaining green. The big island east of it was shaped like a sponge that had been squeezed almost in half. It had some built-up areas, but they were scattered, low-lying towns separated by broad flat regions devoted to agriculture. Other parts of it were mountainous and appeared to be wilderness, albeit scarred by winding roads and speckled with curious installations, heavy on domes and antennas. "That’s the Taiwanese island, isn’t it?" Zula said.