Chinese Foreign Ministry spokesperson at a news briefing in Beijing today said a guided missile destroyer intrusion in its territorial water is the violation of worldwide laws and damaged China's sovereignty.
Vietnam, China, and Taiwan all have overlapping claims in Paracel Islands.
South Korea's new ambassador to China said Tuesday conflict between the two countries over Seoul's deployment of a Terminal High-Altitude Area Defense battery from the USA "cannot continue this way".
China is protesting the sailing of a US Navy ship near its territorial claims in the South China Sea, saying it will continue to take measures to protect Beijing's interests in the vital waterway claimed by several nations.
Expressing firm opposition to the US move, Hua said China will continue to take resolute measures to protect its territorial sovereignty and maritime interests.
It added that it would further strengthen its naval and air defenses. The trip will include a stop in China, which Trump has been pressuring to do more to rein in North Korea.
The number of medical tourists from the United States inched down 4.6 percent on-year during the cited period, the data showed.
China claims the South China Sea and its islands virtually in their entirety. "China urges the U.S.to conscientiously respect China's sovereign territory and security interests, conscientiously respect the efforts regional countries have made to protect peace and stability in the South China Sea, and stop these wrong actions".
The Pentagon has said the United States would continue to carry out the freedom-of-navigation operations.
The United States has said it would like to see more global participation in freedom-of-navigation operations in the South China Sea. He will also visit South Korea, Japan, Vietnam and the Philippines.