China set digital yuan machines for athletes, Olympics officials or visitors to exchange their dollars or rubles to the local e-CNY digital currency as a way to popularize it. The digital renminbi ATMs took many foreign currencies and issued a hardware wallet with the corresponding amount in Chinese crypto in the form of a plastic debit card that could then be used for payment in shops and restaurants.
https://www.notebookcheck.net/China-s-digital-currency-cards-used-as-official-payment-method-at-the-Olympics.601839.0.html