Psaki made the remarks in response to questions from a journalist on whether the reports were accurate and whether the administration was concerned about China’s capabilities.
The report in question came from the Financial Times, which stated:
China tested a nuclear-capable hypersonic missile in August that circled the globe before speeding towards its target, demonstrating an advanced space capability that caught US intelligence by surprise. Five people familiar with the test said the Chinese military launched a rocket that carried a hypersonic glide vehicle which flew through low-orbit space before cruising down towards its target.