九牛二虎之力
jiǔ​niú'èr​hǔ​zhī​lì

tremendous effort

  1. 九 jiǔ
    many
    (bound form) many; numerous; several times
  2. 牛 niú noun
    ox
    ox; cow; bull; cattle; any of various bovine animals
  3. 二 èr numeral
    two
    the number two; 2
  4. 虎 hǔ noun
    tiger
    tiger; commonly referred to as 老虎 lǎo​hǔ
  5. 之 zhī particle
    [possessive]
    Connects a describing word or phrase to the noun it describes, similar to 的 de but used in formal or literary writing.
  6. 力 lì noun
    strength
    physical strength; power; might