The Hong Kong dollar was yoked to the American dollar for many years.

港元多年来与美元挂钩。

《牛津词典》

When it comes to stocks, many are Chinese companies with yuan-denominated revenues, which translate back into a stronger Hong Kong dollar performance for now.

至于香港股市，很多上市公司都是收入以人民币计算的内地企业，随着目前人民币兑港元的升值，这些收入折算成的港元也在增多，使公司业绩显得更加强劲。

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The decrease in hong kong dollar assets was mainly due to the sale of hong kong dollars in exchange for foreign currencies and a decrease in bank borrowings.

外币资产增加，主要是因为以港元购买外币及负债证明书增加。港元资产减少，主要是因为出售港元以换取外币及银行借款减少。

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Local interest rates would then rise to punitive levels, banks would come under intolerable strain, and the link between the American dollar and Hong Kong's dollar would be in jeopardy.

ECONOMIST: Hong Kong

Hong Kong has its own currency, the Hong Kong dollar.

FORBES: China's Global Yuan Push Accelerating

Japanese stocks climbed for the seventh successive session on Friday, reaching a fresh multiyear high, as the yen fell against the U.S. dollar, while Hong Kong and Australian markets rose after trade figures kicked off China's monthly economic data.

WSJ: Asian Shares Mixed; Japan Outperforms