蟪蛄不知春秋 [－－－－－－]

Jyutping wai6 gu1 bat1 zi1 ceon1 cau1
Pinyin huì gū bù zhī chūn qiū

Definitions (CC-CEDICT)
  1. lit. short-lived cicada does not know the seasons; fig. to see only a small piece of the big picture