He turned it over, squinting. 燎. Liáo. Griffin had made this. Liáo, in Mandarin, could mean ‘to burn’ or ‘to illuminate’. It could also refer to a signal lamp. There was a second, smaller silver bar inscribed above the first. Bēacen, it read. It looked like Latin, but Robin, raking his memory, couldn’t come up with its precise meaning or origin.