Abstract:The political relations between the Chinese empire and the Northeast Asian states started with Emperor Wu of the West Han dynasty,with his costly conquest of Weiman Chosun.Then,there were the relations between the East Han empire and so-called Barbaroi,being loose and fluctuant,with jimi (slack control) as the essence of the related imperial policy. What followed was that toward the end of this inaugural ear,a Chinese sub-empire,the Kingdom of Wei which did not unify the Chinese country as a whole,remarkably intensified use of force and diplomacy toward the Northeast Asian region,especially in General Guanqiu Jian's expedition against Goguryeo and almost destroy it,together with the intensifying the formal diplomatic intercourse with the ancient Japan. What is particularly important in a sense is that from early East Han toward the end of the Kingdom of Wei and accompanied with the increasing intercourse in political,diplomatic,and social-cultural sense,the Chinese knowledge on the Northeast Asian states and peoples enriched remarkably,producing the earliest “ethnologies” made by the Chinese about various Barbaroi,i.e.,Puyo,Yilou,Goguryeo,Woju,Hui,Korean (Mahan,Chinhan,and Bianhan confederacies) and Wakoku (Japan). Some unconventional examination and discussion could be made,about the traditional tributary system of the Imperial China,based on the historical facts touched in that article and beyond.
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