You do not need to be a trader to know what the Euro is and what role this currency plays in the international market. Its popularity is due to the political and economic influence of the commonwealth of states-holders (even the USD is inferior here.) HKD - the Hong Kong dollar - in contrast to the Euro almost does not figure on Forex, but the EUR / HKD currency pair is still among the trade tools. It is considered exclusively exotic and is not suitable for every exchange player. Here is a comparison of this non-trivial combination with the pair EUR / USD.