Foreign currency or means of payment expressed in foreign currency that can be settled internationally.

Foreign currency

Necessary conditions: whether it is freely convertible and freely paid.

Foreign exchange market: free market: any foreign exchange transaction is not controlled by the competent authorities of the host country, that is, there is no limit on the amount, exchange rate and currency of each foreign exchange transaction, which is completely determined by the relationship between market supply and demand.

Official market: restrictions on the qualifications of foreign exchange market participants, types of transactions, exchange rate control, foreign exchange use and foreign exchange transaction amount.

black market

This is one of my courseware. In fact, the foreign exchange market refers more to the government's policy actions, exchanges and transactions between banks and between banks and individuals and institutions. Currency exchange in international trade. I think what you are talking about is the investment and wealth management products that many people have passed on to you because of illegal foreign exchange margin trading. Beware of being fooled.