China opposes all US restrictions introduced against Chinese airlines, Foreign Ministry spokesman Zhao Lijian said in a statement on Monday.
Responding to American claims about China's unfair treatment towards US airlines, the spokesman said that Beijing treated all airlines equally and the imposed restrictions are necessary to curb the spread of the coronavirus.
The US-China spat over air traffic comes amid broader tensions between the two countries. President Trump on Thursday announced that the US could completely cut off diplomatic relations with China over the ongoing coronavirus crisis. He earlier claimed that the virus originated in a Chinese lab.
China has repeatedly denied the allegations and urged Washington to stop shifting the blame to Beijing and focus on domestic affairs instead.