This is not a Hong Kong dollar, but an old 100 peso note issued by Uruguay 1967. It is an old currency that has stopped circulating, and now the currency circulating in Uruguay is a new peso. “BANCO? Central? Del? Uruguay means "Central Bank of Uruguay" in Spanish. The words "Hongkong and Shanghai Banking Corporation" and "One hundred yuan" on the paper money were printed by swindlers.
Many criminals cheat people with these invalid banknotes. There is no direct exchange rate between Uruguayan currency and RMB, so the Uruguayan currency new peso cannot be converted into RMB, not to mention the outdated Uruguayan peso.
Don't change foreign currency you don't understand in the future, so as not to be cheated.