BEIJING,
 Aug 21 (Reuters) - China is seriously concerned about a report that 
said the United Stated approved a nuclear strategic plan to focus on 
China's rapid expansion in its nuclear arsenal, the Chinese foreign 
ministry said on Wednesday.
"The
 U.S. is peddling the China nuclear threat narrative, finding excuses to
 seek strategic advantage," a Chinese foreign ministry spokesperson 
said.
According
 to a report by the New York Times, U.S. President Joe Biden approved in
 March a highly classified nuclear strategic plan that focused on 
China's quickly growing arsenal, but also seeks to prepare the U.S for 
possible coordinated nuclear challenges from China, Russia and North 
Korea.
"China
 is seriously concerned about the relevant report, and the facts have 
fully proved that the United States has constantly stirred up the 
so-called China nuclear threat theory in recent years," said Chinese 
foreign ministry spokesperson Mao Ning at a regular press briefing.
The White House 
said
 on Tuesday that the classified nuclear strategic plan approved by Biden
 this year is not a response to a single country or threat.
The
 U.S. has consistently pointed to China's expansive and growing nuclear 
weaponry. An annual report by the Pentagon last October said China had 
more than 500 operational nuclear warheads in its arsenal, and will 
probably have over 1,000 warheads by 2030.
Reporting by Mei Mei Chu; Writing by Bernard Orr; Editing by Jacqueline Wong and Michael Perry