The first step in quality improvement is to understand what the customer really wants.
忧伤愁苦,就会心气滞结;忿怨愤怒,就会心气横逆不顺;惊恐畏惧,就会心气沉落不浮;拘谨固执,就会心气郁郁不释;急躁浮躁,就会心气损耗不足。
"The best stories are those that linger in your mind long after you've finished reading them."