提出并界定了李氏朝鲜事大国策的概念,概括了事大国策的特征,总结了奉行事大国策的原因,梳理了事大国策的内容,客观评价了事大国策对中国和李氏朝鲜的影响。并指出,李氏朝鲜奉行事大国策是造成东北亚历史舞台上“主角”常新而“配角”依旧的主要原因。 Proposed and defined the concept of Lee’s Great National Policy, summed up the characteristics of the Great National Policy, summed up the reasons for pursuing the Great National Policy, summed up the contents of the Great National Policy, objectively assessed the great national policy against China and Lee North Korea Impact. And pointed out that the implementation of Lee’s policy of big power in Northeast Asia is the main cause of the “protagonist” and “supporting role” in the historical stage of Northeast Asia.