HSK 7-9
火候
huǒhou名
heat control; (fig.) mastery; (fig.) crucial moment
煎鱼时掌握火候最关键。
Jiān yú shí zhǎng wò huǒ hou zuì guān jiàn.
Controlling the heat is crucial when pan-frying fish.
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Appears across levels (7-9) in the HSK 3.0 word list.