South Korea and North Korea exchanged fire near the disputed "Northern Limit Line" on the afternoon of November 23. Both sides will definitely start a war of words on who fired first. But Professor Shi Yuanhua, Director of Center for Korean and朝鲜Studies of Fudan University, said that South Korea and North Korea would not go into real war. This artillery shelling incident is for both sides to vent their accumulated resentment. It is also a means for North Korea to put the US back to the negotiation table.