1. After installing the "China Merchants Bank" App, open the App and click My at the bottom; 2. On my page, click on the foreign exchange purchase entrance; 3. After entering the foreign exchange page, you can see the foreign currency list, and click to select the foreign currency ruble in the list.

Foreign currency is the creditor's rights held by monetary authorities in the form of bank deposits, treasury bonds of the Ministry of Finance and long short-term government bonds. Can be used when the balance of payments is in deficit. Foreign exchange mainly includes foreign currency, foreign currency deposits and foreign currency securities. It is an important part of a country's international reserves and the main means of payment to pay off international debts. In a broad sense, all assets owned by a country in foreign currency. It refers to the flow of money between countries and a specialized commercial activity of exchanging one country's currency for another country's currency to pay off international creditor's rights and debts. In fact, it 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, long-term and short-term treasury bonds, etc. Can be used when the balance of payments is in deficit.