China on Thursday urged the United States to honor its commitments and stop selling arms to Taiwan.

"China has maintained a clear and persistent stance on opposing U.S. arms sales to Taiwan. The U.S. stance undermines China's core interests," Foreign Ministry spokesman Qin Gang told a regular news briefing on Thursday.

Qin's comments came after U.S. Senate Intelligence Committee Chairman Dianne Feinstein said on Wednesday that U.S. arms sales to Taiwan were hurting closer ties with China.

China curtailed some military exchanges with the United States following the Pentagon's decision in January to sell an arms package worth about 6.4 billion U.S. dollars to Taiwan, including Patriot missiles, Black Hawk helicopters and minesweepers.

Qin urged the United States to take concrete steps to improve and develop China-U.S. ties.