ㄏㄠˇㄇㄚˇhǎomǎㄅㄨˋbùchīㄏㄨㄟˊㄊㄡˊㄘㄠˇhuítóucǎo

好马不吃回头草
  1. 志氣即使遭逢艱難險阻不會回頭路 好馬不吃回頭草呼之即來,揮之即去?」。

lit. a good horse doesn't come back to the same pasture (idiom)​, fig. one should not go back to one's past experiences (of love, job etc)​
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