bān​shí​tou​dǎ​zì​jǐ​de​jiǎo

shoot oneself in the foot

搬石头打自己的脚 搬石頭打自己的腳 bān​shí​tou​dǎ​zì​jǐ​de​jiǎo
shoot oneself in the foot
to lift a rock only to drop it on one's own feet; to hurt oneself by one's own actions or through a malicious scheme intended for others

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Synonym