《战国策·秦二·楚绝齐齐举兵伐楚》
楚王很喜欢这位客卿，有一次他生病了，楚王就派人去问候说： 是真生病吗？
楚王甚爱之，病，故使人问之，曰： 诚病乎?
King Huai of Chu admired this guest official very much. Once, when he became sick, King Huai of Chu sent someone to ask after him, saying: Are you truly ill?