Availing themselves of the opportunity, the Japanese aggressors asserted that the Korean side conducted an act of hostility towards Japan, and then started an open armed intervention. They threatened and blackmailed the Korean feudal government with cannons and warships and enforced the conclusion of an aggressive and subordinate unequal treaty on it in February the following year.
Japan stipulated the extraterritorial rights in the treaty. In this way, it provided a legal guarantee for committing all sorts of criminal acts, including aggression and plunder, at will, irrespective of the law of the Korean feudal state. On this basis, it could stretch out its tentacles of aggression deep into Korea in political, economic, military and other fields.