Meanwhile, at an air base in the central city of Chengdu, China’s first stealth fighter jet has been spotted taxiing along a runway. It has yet to take off, but American plane-spotters have already begun speculating that it might be able to beat an F-22 in a dogfight. Finally, at a command bunker in the north of Beijing, the Chinese Second Artillery Corps controls the jewel in the crown – a new missile that could sink a US aircraft carrier, the first such weapon in the world. The Dong Feng (or East Wind) 21D missile is now “operational”, according to Admiral Robert Willard of the US Pacific Command, which will now have to think twice before committing a $20 billion (£12.8 billion) aircraft carrier and its 6,000 crew anywhere within 900 miles of the Chinese coast.