China's Taiwan Affairs Office said on Wednesday any interference with or damage to the "one China" principle would have a serious impact on peace and stability in the Taiwan Strait.
U.S. President-elect Donald Trump said on Sunday the United States did not necessarily have to stick to its long-standing position that Taiwan is part of "one China", further upsetting China which was already angered by Trump's earlier telephone call with Taiwan President Tsai Ing-wen.
The issue is highly sensitive for China, which considers Taiwan a renegade province, and Beijing expressed "serious concern" about Trump's remarks.
