管窥蛙见
      Explanation: Glimpse, seen from the tube the day; frog see, see the day frog from the well. Metaphor of knowledge to be shallow, narrow field of vision. Qing Li Yu, "Xian Qing Ou Ji lyrics on the Rhythm": "﹝ ﹞ only Glimpse frog to see the knowledge, absurd language concentric; virtual red flag in Ci to be the future of."