Wu said that he learned that King Leung, head of financial services and technology at Invest Hong Kong, said on CoinDesk TV that since cryptocurrencies are banned in mainland China, licensed exchanges in Hong Kong are basically not allowed to open to mainland China, and exchanges need to check IP and other methods To ensure this; for users in other countries such as Southeast Asia and Europe, licensed exchanges are obliged to check and comply with the regulations of the country where the customer is located.