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I. IntroductionⅡ. On Neutrality (1885)Ⅲ. Process of Belgium and Bulgaria’s “Neutralization”Ⅳ. Sino-Korean Relations in the 19th CenturyV. Conclusion
I. Introduction Ⅱ. Reality of the Tributary SystemⅢ. Appropriation of 屬國’s MeaningIV. Another Historical Dispute?