To act in a way that defeats one's own purpose; to be counterproductive.
他想要提高工作效率，却花大量时间在无关紧要的细节上，这无疑是排糠障风。
He wanted to improve work efficiency, but spent a lot of time on irrelevant details, which is undoubtedly counterproductive.
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To act in a way that defeats one's own purpose; to be counterproductive.