The US envoy to China has called on the country to be "more honest" about the origins of the Covid-19 virus.
His comments come a day after US media reported that a federal agency had found the pandemic probably started from a laboratory leak in Wuhan.
The Department of Energy reportedly concluded with "low confidence" that the virus was accidentally leaked.
China's foreign ministry hit back, saying Covid's origin "was about science and should not be politicised".
Washington-Beijing ties have been under strain since the US shot down an alleged Chinese spy balloon this month. เกมบาคาร่า