《战国策·赵一·谓赵王曰三晋合而秦弱》
如今秦王对楚王说： 您如果迈动贵步来会见寡人，一定和楚国结为兄弟之国，一定为楚国进攻韩国、魏国，返回楚国原来的土地。 
今谓楚王： 苟来举玉趾而见寡人，必与楚为兄弟之国，必为楚攻韩、梁，反楚之故地。 
Now Qin's King says to Chu's King: If you move your noble footsteps to come and see my humble person, we must forge a brotherly bond between our countries and Qin will surely help Chu attack Han and Wei, restoring the original lands of your country Chu.