永不生锈的螺丝钉 永不生鏽的螺絲釘
yǒng bù shēng xiù de luó sī dīng
Meaning
a "screw that never rusts" – metaphor used in CCP propaganda to praise loyal, selfless contributors, famously applied to model worker Lei Feng 雷锋 Léi Fēng
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