《战国策·东周·三国隘秦》
秦国很想知道三国的实情，您不如马上去见秦王说： 请允许我为大王侦察东方三国赵、韩、魏的行动。 
秦欲知三国之情，公不如遂见秦王曰： 请谓王听东方之处 。
Qin is very interested in the details of the three states. You might as well go and see the King of Qin and say: Please allow me to investigate the actions of the three eastern states of Zhao, Han, and Wei for the King.