In addition, not all merchants in Hong Kong accept Chinese currency. Some merchants may only accept Hong Kong dollars, while others may accept both Chinese currency and Hong Kong dollars. It is best to check with the merchant before making a purchase to see if they accept Chinese currency.
If you are planning to use Chinese currency in Hong Kong, it is a good idea to exchange your currency for Hong Kong dollars before you arrive. This will give you the best exchange rate and will avoid any potential problems with using Chinese currency in Hong Kong.