to grind an iron bar down to a fine needle (idiom); fig. to persevere in a difficult task; to study diligently
trad. 磨杵成針
Also written 磨杵成針【mó chǔ chéng zhēn】
to grind an iron bar down to a fine needle (idiom); fig. to persevere in a difficult task; to study diligently
trad. 磨杵成針
Also written 磨杵成針【mó chǔ chéng zhēn】