But jasper has an occasional stain. Zhu Geliang made the faults that he should have put Wei Yan in an important position, but he put ma Su instead.

但是，正如碧玉上有时也会出现瑕疵一样，诸葛亮在用人上也有过对魏延本该重用而不用、对马谡不该重用而用之的失误。

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In fact, The historical records show that MA Su lost the territory in the war of Jieting after disobeying the orders from superior and disregarding the right suggestions from his subordinates.

事实上，根据历史记载，马谡在街亭战役中丧众失地，违反上级的部署，不听部下的正确建议，兵败后又畏罪潜逃；

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