Besides the disasters of flood and droughts, heavy disasters, such as, plague of insects, windstorm, hail, and icy snow calamity took place occasionally in the later stage of Qing dynasty in Hunan.

除水旱灾害之外，清代后期对湖南危害较大的灾种主要为虫灾，风灾、雹灾、冰冻雪灾偶有发生。

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Drochs were parasitic insects that burrowed under beings' skin and drank their life energies and intelligence. Their feeding was the source of Death Seed plague.

瘴疴虫是一种寄生昆虫，钻入生物体皮下，吸取寄主的生命能量和智力。它们构成了死种瘟疫的病源。

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