专心致志 — “To concentrate one's attention wholeheartedly”

Once upon a time, there was a highly skilled chess master named Qiu. Qiu had two students who learned chess from him.

One student was very diligent and concentrated fully when learning from the teacher. The other, however, was not like this. He thought learning chess was easy and didn't require serious effort.

While the teacher was explaining, he sat there, his eyes seemingly looking at the chess pieces, but in his mind, he was thinking: "How wonderful it would be to shoot down a wild goose in the wilderness right now and enjoy a delicious meal!"

Because he was always daydreaming and absent-minded, he didn't absorb any of the teacher's explanations. As a result, although both students were taught by the same renowned master, one made rapid progress and became a master chess player, while the other learned nothing at all.