Meaning of the Idiom
bei dao er chi（run in opposite directions）
Once a man wanted to go to the south, but his carriage was heading north.
A pedestrian asked him:” If you are going to south, why is your chariot heading north?” The man answered:” My horse is good at running, my driver is highly skilled at driving a carriage, and I have enough money.” The man didn’t consider that the direction might be wrong; the better his conditions were, the farther away he is from his destination.
The idiom derived from this story indicates that one’s action was the opposite effect to one’s intention.
背道而驰
[bèi dào ér chí]，指向着相反的方向奔驰；形容背离正确目标，朝反方向走。
出自唐·柳宗元《〈杨评事文集〉后序》。
例句
我和哥哥的想法总是背道而驰。
开创流派的艺术家，大多与潮流背道而驰，自创一格。
这次学校举行机器人比赛，本来是要求设计一个可以进行投篮的机器人，而小组长却背道而驰，带领我们设计了一个踢足球的机器人，结果我们当然没有拿到好成绩。
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