Dollar Peg for Hong Kong. The Hong Kong dollar has long been pegged to the U$.$S$.$ dollar at HK$$7\mathrm{.}77/$$$.$ When the Chinese yuan was revalued in July $2005$ against the U$.$S$.$ dollar from Yuan $8\mathrm{.}23/$$ to Yuan $8\mathrm{.}09/$$$,$ how did the value of the Hong Kong dollar change against the yuan?

The original HK$$/$Yuan cross rate was HK$ Yuan. $($Round to four decimal places.$)$