A Study About The Korean's Report Policy of Japanese Threat During The Early Qing Dynasty

Through wars,the earlier Qing Dynasty forced Korea becoming the subsidiary country of his,but Korea heat the new relationship,always wanted to break up the relation since the beginning,what's more,Korea used a new policy which named the report of Japanese.This policy successfully beaked up the treaty in 1637 and strengthen Korea defend system;at the same time,the policy also brought about a important effect to both sides of China and Korea,especially to China and it's later history.