管中窥豹，可见一斑
guǎn​zhōng​kuī​bào​kě​jiàn​yī​bān

to see the whole through a small part

  1. 管 guǎn noun
    tube
    tube; pipe; cylinder; any long, hollow cylindrical object
  2. 中 zhōng locative
    middle
    middle; center; within; among; inside a range or period of time
  3. 窥豹 窺豹 kuī​bào
    restricted view
    To see only one spot on a leopard; used to describe seeing only a small part of a larger whole
  4. ， kě
    non-Chinese
  5. 可见一斑 可見一斑 kě​jiàn​yī​bān
    to get a glimpse of the whole
    to catch a glimpse of one small part and from that infer the whole picture; to be able to judge the judge the overall situation from a single example