China said that it resolutely opposes any official contact between the U.S. and its Taiwan region as "unofficial" delegations sent by U.S. President Joe Biden are expected to arrive in southeast China's Taiwan.

"We urge the U.S. side to strictly abide by the one-China principle, the three China-U.S. Joint Communiques, and immediately stop any form of official contacts between the U.S. and the Taiwan region," Chinese Foreign Ministry spokesperson Zhao Lijian said at Wednesday's regular press conference.

The remarks came as Biden dispatched former U.S. senator Chris Dodd and former deputy secretaries of state Richard Armitage and James Steinberg to visit the Taiwan region. Reuters reported that they have arrived in the region and will meet with senior Taiwanese officials, including the current Taiwan leader Tsai Ing-wen.

Zhao pointed out Tsai is just one of China's regional leaders, adding that China has lodged solemn representations to the U.S. side over the trip.

The U.S. should deal with Taiwan affairs cautiously and prohibit from sending any wrong signals to "Taiwan independence" forces to avoid bringing severe damage to China-U.S. relations and peace and stability across the Taiwan Straits, Zhao said.

China has also responded to the recent drills conducted by the Chinese People's Liberation Army (PLA) in the Taiwan Straits as aimed at safeguarding national sovereignty and responding to interference by external forces and provocations by "Taiwan independence" forces. 

Ma Xiaoguang, the spokesman for the Taiwan Affairs Office of the State Council, made the remarks on Wednesday. 

The spokesman said the drills send a signal that the Chinese mainland is determined to curb "Taiwan independence" and Taiwan's collusion with the U.S. 

"We are willing to do our utmost to strive for the prospect of peaceful reunification, but will never leave any room for all forms of 'Taiwan independence' secessionist activities," Ma stressed. 

"Taiwan issue is an internal affair of China and does not allow any foreign interference. We resolutely oppose the U.S. side's so-called 'Chinese military threat', U.S.'s continuous sending of wrong signals to the 'Taiwan independence' forces and playing the 'Taiwan card,'" Ma added.  

"We urge the U.S. to abide by the one-China principle and the three China-U.S. joint communiques and handle Taiwan-related issues in a prudent and appropriate manner," Ma stressed. 

He warned that the Democratic Progressive Party (DPP) authority's reliance on the U.S. to confront the mainland and seek "Taiwan independence" will only push Taiwan to disaster. 

(Cover: The PLA Air Force planes conduct training exercises, November 19, 2017. /Xinhua)