捡到100元怎么说英语

To say "I found 100 yuan" in English, you could say "I found 100 Chinese yuan" or "I found 100 CNY." Alternatively, you could simply say "I found 100 yuan" without specifying the currency, as "yuan" is understood to refer to the Chinese currency. You could also say "I found 100 RMB," as RMB is the abbreviation for the Chinese currency, the Renminbi.