牛角挂书 niú jiǎo guà shū

DEFINITIONS

  1. lit. to hang one's books on cow horns (idiom)
  2. fig. to be diligent in one's studies

CHARACTERS

牛 niú cow, ox, bull; KangXi radical93
角 jiǎo horn; angle, corner; point
挂 guà hang, suspend; suspense
书 shū book, letter, document; writings