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- A US defense official downplayed the threat of China's new Xi'an H-20 bomber.
- The official said it's "not really" a concern, per defense media.
- That said, the US won't really know for sure how good or bad they are until it sees them fight.
China's new bomber, the Xi'an H-20, is intended to rival America's new stealth bomber, but a US defense official told reporters on Monday it's "not really" a concern.