The disputes China is having with its neighbors are different. China's official position is that a large part of the South China Sea is their territory, a view that isn't exactly shared by the other nations of the region or most of the international community.
Sending the Chinese Navy into territorial waters off of South America to secure theft of Argentinian natural resources would be a completely different move, and arguably an act of war.
Sending the Chinese Navy into territorial waters off of South America to secure theft of Argentinian natural resources would be a completely different move, and arguably an act of war.