They are also stealing islands from Vietnam and Taiwan.
In an effort to test these tensions, an American warship just did this!
A US warship has sailed near a disputed island in the South China Sea to challenge efforts to limit freedom of access, the Pentagon said.
The vessel passed close to Triton Island in the Paracel Islands, a statement said.
China, one of the countries claiming the islands, responded by accusing the US of violating its laws.
China and several other nations have rival claims in the South China Sea, which is rich in resources.
The US says it does not take sides on such territorial disputes but wants to safeguard access to the important shipping route.
Could this escalate tensions?
Let’s hope not!
Now Watch This. Is China preparing for war with us?
Share your thoughts: Will we fight a war against China?