a "screw that never rusts" — sb who selflessly and wholeheartedly serves the Communist Party, like Lei Feng 雷锋【LéiFēng】, to whom the metaphor is attributed
a "screw that never rusts" — sb who selflessly and wholeheartedly serves the Communist Party, like Lei Feng 雷锋【LéiFēng】, to whom the metaphor is attributed