皓首穷经
      Explanation: Hao: white; first: hair; the poor through: to concentrate on research classics and ancient books. Until the white of the old man He was in-depth study of the scriptures and ancient books.
      Usage: Partial official; as the predicate attribute; with compliment
      Source: Tang Han Wo "Pu Yi Cui Jiang presented scholars in" Poem: "White's first poor pass by the secret meaning of degree of risk when pension Castle."
      Examples: Youth for Fu, ~; pen although a thousand words, the chest is no one policy. ★ Ming Luo, "Three Kingdoms" back forty
  • Thesaurus:  The first white north, to continue to study even in old age