to grind one's way through an ink stone; to persevere in a difficult task (idiom); to study diligently (idiom)
trad. 磨穿鐵硯
Also written 磨穿鐵硯【mó chuān tiě yàn】
to grind one's way through an ink stone; to persevere in a difficult task (idiom); to study diligently (idiom)
trad. 磨穿鐵硯
Also written 磨穿鐵硯【mó chuān tiě yàn】