Foreign exchange is the creditor's rights held by the monetary management authorities (central bank, monetary management institutions, foreign exchange stabilization fund and Ministry of Finance) in the form of bank deposits, treasury bonds and long-term and short-term government securities. , which can be used when the balance of payments is in deficit.

As far as silver is concerned, the leverage ratio is calculated as 1: 10, and the first-hand calculation of silver is 4000. If you buy 500 lots, you need to invest 4000/ 10 *500=200000. Buy up, silver reaches 40 10, and you earn 5000.