《战国策·韩一·张仪为秦连横说韩王》
大王如果不归顺秦国，秦必定发兵占领宜阳，断绝韩国上党的交通；东进夺取成皋和宜阳，那大王就将失去鸿台宫、桑林苑。
大王不事秦，秦下甲据宜阳，断绝韩之上地；东取成皋、宜阳，则鸿台之宫，桑林之苑，非王之有已。
If your majesty does not surrender to Qin, Qin will definitely send troops to occupy Yuyang and cut off the traffic between South Korea and Shangdang; If you march eastward and capture Chenggao and Yuyang, your majesty will lose Hongtai Palace and Sanglin Garden.