解释:齐国是强国,利用它的强大进攻宋国,让他逞强,燕国就可以乘机打败齐国;齐国是大国,利用它的大国野心吞并宋国,增加土地,燕国就可以乘机进攻。
The past is a shadow that follows us, always present, always influencing.
I don't chase fame or fortune, only inner fulfillment.