Why are Hong Kong in the Olympics as a nation when it is well known that they are a state of China?

Especially as China are hosting it, I mean, why would they allow it, no government not even Hong Kong's sees them as a nation. Neither do the UN or the IOC? So why??Why are Hong Kong in the Olympics as a nation when it is well known that they are a state of China?
Hong Kong and China has agreed that there's one China but two different political systems.Why are Hong Kong in the Olympics as a nation when it is well known that they are a state of China?
Hong Kong (or Republic of China, offically Taiwan) are considered Commonwealths. These are similar to US Virgin Islands, Guam, Pureto Rico, which are also commonwealths. All commonwealth's are self governing territories of various countries. For example Puerto Rico’s designation as a commonwealth implies an ongoing relationship with the US, but does not imply statehood. Since these Commonwealths are self governing, they are not officially part of the country and can therefore have their own olympic teams.



Hong Kong is kinda like Washington DC. Its not really as city or a state. Its more like a separate district that is part of the country.
Obviously the world sees Hong Kong as it's own country. Otherwise they wouldn't be going to the olympics...
hong kong has its own NOC back in the days, pretty much same as usa and us virgin island, and so on and so on.
Why are GB a separate team when they are the 53rd state of America?
Why do Scotland and Wales have their own footy and rugby team when they are colonies of England?