HSK 7-9
偏偏
piānpiān副
(indicating that sth turns out just the opposite of what one would wish) unfortunately; as it happened; (indicating that sth is the opposite of what would be normal or reasonable) stubbornly; contrarily; against reason; (indicating that sb or a group is singled out) precisely; only; of all people
越是着急，钥匙偏偏找不到。
Yuèshì zháojí, yàoshi piānpiān zhǎo búdào.
The more anxious one gets, the more the keys seem impossible to find.
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Appears across levels (7-9) in the HSK 3.0 word list.