(Photo: CGTN)

Anyone or any forces should not underestimate China's determination and ability to safeguard national sovereignty and territorial integrity, Ma Xiaoguang, spokesman for the State Council's Taiwan Affairs Office said on Thursday.

Ma made the remarks in response to a reporter's question if Chinese air crafts flown around Taiwan is a warning to the "Taiwan independence" statement and "Taiwan independence" separatist activities.

Live-fire drill underway in the Taiwan Strait

"Taiwan independence" separatist activities were the greatest threat to the peace and stability of the Taiwan Strait and the compatriots on both sides should remain highly vigilant, he said. 

"We firmly oppose all forms of Taiwan independence secessionist activities and any attempts at "Taiwan independence" by secessionist forces are doomed to fail," Ma added.