《战国策·秦二·宜阳之役冯章谓秦王》
后来，武王真的派冯章去答应把汉中让给楚国，使韩国陷入孤立，因而秦国一举攻克了韩国的宜阳。
王曰： 善。 果使冯章许楚汉中，而拔宜阳。
Later, King Wu of Qin actually sent Feng Zhang to promise to give Hanzhong to the State of Chu, which isolated the State of Han, so the State of Qin took the opportunity to capture Yicheng of the State of Han.