HSK 7-9
千方百计
qiānfāng-bǎijìlit. thousand ways, a hundred plans (idiom); by every possible means
大家千方百计降低成本。
Dàjiā qiānfāngbǎijì jiàngdī chéngběn.
Everyone tried every possible way to reduce costs.
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Appears across levels (7-9) in the HSK 3.0 word list.