Cave Nest:
Swallows build their nests on mountain caves, rock caves and high steep rock. Affected by natural climate and environment, the texture tends to be rigid and harder, with a darker color and less appealing appearance. There are more impurities and takes longer time to soak, giving a crispier arrangement of thread.
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Swallows build their nests on mountain caves, rock caves and high steep rock. Affected by natural climate and environment, the texture tends to be rigid and harder, with a darker color and less appealing appearance. There are more impurities and takes longer time to soak, giving a crispier arrangement of thread.
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