 <translate> The relevant sentence in the passage is: The Hong Kong dollar (Chinese: 港幣; Cantonese Yale: Góng bàih; sign: HK $; code: HKD) is the official currency of Hong Kong.
So, the final answer is The Hong Kong dollar. <yor> Ọ̀rọ̀ tí ó yẹ nínú àyọkà náà ni: Owó tí wọ́n ń lò ní Hong Kong (Chinese: 港幣; Cantonese Yale: Góng bàih; àmì: HK $; kóòdì: HKD) ni owó tí wọ́n ń lò ní Hong Kong. Nítorí náà, ìdáhùn tí ó kẹ́yìn ni Dólar Hong Kong. 