During a 1842 war the Chinese Empire was forced to resign Hong Kong to the British. Hong Kong was thereby since 1848 a British Empirial colony which was 'leased' from the Chinese for a 150 years.. The nowadays People's Rebublic of China let the British know that they won't extend the lease any l onger after 1998, so since that year Hong Kong is gouvenered by China again, just like Macau for example.
Since e.a. the overseas territories of The Netherlansd (Netherlands Antilles) can be flown when one's HQ in The Netherlands I strongly think it should be possible to base in cities of China when your HQ is in a China gouverned area.
Does someone know how to arrange this?