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.
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.