Meaning of the Idiom
zhuan xin zhi zhi（to give complete attention to）
Yi Qiu was known as the most famous expert at chess throughout the land.
Once he gave lessons on chess to two men. One of them was completely absorbed in his teaching, listening attentively to Yi Qiu while the other, who seemed to be listening, had his mind on something else. In fact, he was having a fancy that a swan was flying towards him and he had in his hands a bow and an arrow, ready to shoot. As a result, though he was having the same lesson together with the first man, yet he turned out a much inferior pupil.
If one does not give single-hearted devotion to it, no skills will be learned.
专心致志
[zhuān xīn zhì zhì]，指把心思全放在上面，形容一心一意，聚精会神。
出自战国时期的《孟子·告子上》。
例句
同学们在专心致志地写作业。
课堂上，我专心致志地听老师讲课。
学习要专心致志，不能三心二意。
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