《资治通鉴·汉纪·汉纪十六》
昔日周襄王不孝顺母亲，所以《春秋》上说他： 天王出居郑国， 因其不孝，所以出居郑国，被迫抛弃天下。
周襄王不能事母，《春秋》曰： 天王出居于郑， 由不孝出之，绝之于天下也。
In the past, King Xiang of Zhou was unfilial to his mother, so "Chun Qiu" said about him: The king lived in Zheng, because he was unfilial, so he lived in Zheng, and he was forced to abandon the world.