“东道主”一词最早见于《左传·僖公三十年》:“(烛之武)见秦伯,曰:‘秦、晋围郑,郑既知亡矣。若亡郑而有益于君,敢以烦执事。越国以鄙远,君知其难也,焉用亡郑以陪邻。邻之厚,君之薄也。若舍郑以为东道主,行李之往来,共其乏困,君亦无所害。’”“东道主”是烛之武站在郑国的 The term “host” was first seen in “Thirty Years of Zuo Xianyong”: “” (The candle of the war) See Qin Bo, saying: ’Qin, Jin Cheng Zheng, Zheng both know death. Yu Jun, dare to annoy the deeds of Vietnam to despise, Jun know their own difficulties, how to use Zheng to accompany their neighbors thick, the thin of the king also if Ruoxie Zheng host, the baggage of the total lack of Sleepy, monarch also harmless. ’ “” Host "is the candle of Wu standing in the country