Beijing warned Friday that the US should not underestimate China's military as the top defence officials from both countries met on the sidelines of a security forum.
As Beijing and Washington vie for influence in a region hosting potential flashpoints such as the South China Sea, Korean Peninsula and the Taiwan Strait, acting US Defence Secretary Patrick Shanahan met Chinese Defence Minister General Wei Fenghe for 20 minutes Friday.
Chinese defence ministry spokesman Wu Qian said they "reached some consensus" on issues of common concern, adding that Wei "particularly emphasised the Taiwan issue".
China sees Taiwan as part of its territory to be reunified, despite the two sides having being ruled separately since the end of a civil war on the mainland in 1949.
Beijing is regularly angered by US warships transiting through the Taiwan Strait, which it considers its territorial waters.
"He (Defence minister Wei) pointed out that the US has recently had a series of negative words and actions on this issue", Wu said, adding that Beijing was "firmly opposed" to this.
"On the issue of safeguarding national sovereignty and territorial integrity, the US should not underestimate the determination, will and ability of the Chinese military."