HSK 7-9
缝
fèng名
seam; crack; crevice; gap
石缝里竟长出一株小草。
Shí fèng lǐ jìng zhǎng chū yì zhū xiǎo cǎo.
A blade of grass unexpectedly grew from a crack between the rocks.
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Appears across levels (7-9) in the HSK 3.0 word list.