磨穿鐵硯 mó chuān tiě yàn

DEFINITIONS

  1. to grind one's way through an ink stone
  2. to persevere in a difficult task (idiom)
  3. to study diligently (idiom)

CHARACTERS

磨 mó
HSK 6
grind; polish; rub; wear out; a millstone
穿 chuān
HSK 2
penetrate, pierce, drill; wear
鐵 tiě iron; strong, solid, firm
硯 yàn inkstone