'a small spark can set fire to the entire wilderness', hence a metaphor to not underestimate the power of something that is seemingly small; Catching Fire (The Hunger Games), a book/film
Definitions (粵典–words.hk)
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Definitions (Kaifangcidian)
(沒有對應漢語詞彙)
Examples (粵典–words.hk)
Cantonese
星火燎原
星火燎原
sing1 fo2 liu4 jyun4
a spark can set off a fire that scorches the plains