《三国志·蜀书·庞统法正传》
将军还没还未到达白水关，先派人去告诉他们，说荆州情况紧急需要返回援救，同时下令我军装整理行装，对外装作即将返回的样子，这杨淮、高沛二人，既钦佩将军的英名，又高兴将军离开益州，估计他们一定会轻装前来拜见将军，将军就趁机抓获他们，进而收编他们的部队，随即向成都进发，这是中策。
将军未至，遣与相闻，说荆州有急，欲还救之，并使装束，外作归形；此二子既服将军英名，又喜将军之去，计必乘轻骑来见，将军因此执之，进取其兵，乃向成都，此中计也。
Before Liu Bei reached Baishuiguan, he sent someone to tell them that the situation in Jingzhou was urgent and that he needed to return to rescue them. At the same time, he ordered his army to pack up their belongings and pretend to be about to return. Yang Huai and Gao Pei both admired Liu Bei's reputation and were happy that he was leaving Yizhou. It was estimated that they would come to meet Liu Bei with light clothes. Liu Bei took the opportunity to capture them and take over their troops, and then marched on to Chengdu. This was the middle strategy.