China has tested a secret hypersonic missile.

China has conducted final tests of a secret hypersonic air-to-air missile that could pose a serious threat to the latest American military aircraft, the South China Morning Post reports, citing testers. 

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China’s hypersonic air-to-air missiles have undergone extreme thermal testing to meet the strict performance requirements of the People’s Liberation Army Air Force, according to scientists involved in the project.

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It is noted that this is the first official confirmation of the existence of this mysterious weapon, which could pose an unprecedented threat to American military aircraft, including the B-21 stealth bomber, which is currently undergoing flight tests.