《战国策·魏一·苏子为赵合从说魏王》
再说魏国是天下的强国，大王是天下贤明的君主，如今竟有意投向西方服事秦国，自称是秦国东方的属国，建筑秦帝行宫，接受秦的封赏，春秋两季给它进贡助祭，我心里替大王惭愧。
且魏，天下之强国也；大王，天下之贤主也。今乃有意西面而事秦，称东藩，筑帝宫，受冠带，祠春秋，臣窃为大王媿之。
Moreover, Wei is a superpower and the king is the wisest ruler on earth. Now you plan to go to the west to serve Qin, claim yourself as Qin’s subordinate state in the east, build palaces for the Qin Emperor, accept Qin’s rewards, and pay tribute to Qin biannually. I feel ashamed for you.