管中窺豹 [－－窥－]

Jyutping gun2 zung1 kwai1 paau3
Pinyin guǎn zhōng kuī bào

Definitions (CC-CEDICT)
  1. lit. to see a leopard through a narrow tube (idiom); fig. to miss the big picture
Definitions (Wiktionary)
  1. phrase, idiomatic
    to see only part of the big picture; to have only a limited view of something