I know, because in 1997, I worked in a company of Hong Kong people, and they paid their wages in Hong Kong dollars instead of RMB, which was great. Five thousand one month, give me five thousand Hong Kong dollars. As a result, every month I take my bill to China Bank to exchange RMB.
Ten years ago, about 2006. I don't know the exact exchange rate, but I think those Hong Kong people still have a sense of superiority. I want them to have a sense of superiority because 1 Hong Kong dollars can be exchanged for more than 1 RMB.
Now Hong Kong people have no sense of superiority, because the Hong Kong dollar has depreciated, and 1 Hong Kong dollar can only be exchanged for 83 yuan RMB.