'Invaders' such as wind, cold, heat, dampness, dryness factor into illness, so can five phases known as fire, earth, metal, water and wood.

风、寒、暑、湿、燥等“外敌”会致病，而金、木、水、火、土的五行不调也会让人生病。

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Some areas of the world experienced unusually dry conditions and excessive dryness led to extensive forest fire.

世界一些地区经历了罕见的干旱，过度的干旱导致了大面积的森林火灾。

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In order to distinguish them from the six exogenous pathogens, they are termed the internal wind, internal cold, internal damp, internal dryness and internal fire.

为了使其与外感六淫相区别，称为内风、内寒、内湿、内燥、内火。

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