The family of the story's main character are nest gatherers, and after she grows up, whenever she is cleaning dirt off swiftlets 'nests with a needle, the terrifying scene of the nest harvest appears before her eyes.
故事主角因為家人從事採燕工作，當她長大後，用針挑出燕窩裡的雜質時，眼前便會出現採燕驚心動魄的畫面。