鑽堅仰高 [ㄗㄨㄢˋ ㄐㄧㄢ ㄧㄤˇ ㄍㄠ; zuan4 jian1 yang3 gao1]
  delving firmly, eyes raised (idiom); from Analects: Confucius' disciple 顏淵[ㄧㄢˊ ㄩㄢ; yan2 yuan1] aspires to the heights of Confucius's teaching
  to dedicate oneself to a high goal and learn intensively
  meticulous and diligent study
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