What do the glass bottles symbolize in the novel, Two Years Eight Months and Twenty-Eight Nights?

Glass bottles in the novel symbolize entrapment, longstanding suffering, and revenge. Several of the Grand Ifrits are deeply scarred by their captures in bottles. And their search to avenge these feelings takes the form of attacking all humans (false representations of the single humans who tormented them). The bottles and their experiences with them become the Ifrits’ excuses for inflicting rage and cruelty on others.