China urged the United States to immediately cancel a plan to sell Taiwan F-16V jet fighters on Monday. 

Geng Shuang, spokesperson for the Chinese Foreign Ministry, said at a regular press briefing that the U.S. must bear all consequences unless it stops arms sales to and military contact with Taiwan. 

Geng made the remarks after U.S. President Donald Trump said he has approved the sale of eight billion U.S. dollars of F-16V jet fighters to Taiwan. 

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China vows to take countermeasures over U.S. arms sales to Taiwan

The spokesperson said the U.S. has seriously violated the one-China principle and the three China-U.S. joint communiques, especially the August 17 communique, adding that it has interfered in China's internal affairs and undermined China's sovereignty and security interests. 

Stressing that the Taiwan question concerns China's sovereignty and territorial integrity and involves China's core interests, he said China will stand firm in safeguarding its sovereignty and security.  
  
China will take necessary measure to protect its interests in accordance with the development of the situation, he added. 

Meanwhile, Ma Xiaoguang, spokesperson for the State Council Taiwan Affairs Office, condemned Washington for seriously harming China-U.S. ties, cross-Strait relations and peace and stability in the Taiwan Strait. 

Ma urged the U.S. to immediately drop the plan of arms sales to Taiwan and stop sending "seriously wrong signals" to "Taiwan independence" separatist forces. 

"No force should underestimate our determination and capability to safeguard China's sovereignty and territorial integrity," he stressed. 

The spokesperson also warned Taiwan leader Tsai Ing-wen and the Democratic Progressive Party (DPP) authority not to harm interests of compatriots across the Strait and pay expensive "protection fees" to the U.S., adding that they would be abandoned by Washington eventually.