paper is also called "special drawing right". Special Drawing Rights (SDR) is a book asset created by the resolution of the 1969 annual meeting of the International Monetary Fund. Its purpose is to adjust the balance of payments deficit by increasing international reserves. At the beginning of SDR's establishment, it was fixed in gold, and the unit gold content was equivalent to .888671g before the depreciation of the US dollar. After gold was monetarized, it was fixed in 16 currencies on July 1, 1974, and fixed in 5 currencies in 198 (including US dollar, Japanese yen, German mark, French franc and British pound). Although SDR has no connection with gold, the name "paper gold" has been used. Special drawing rights are different from ordinary drawing rights. It is a book asset created by the International Monetary Fund. No fund will be issued, but it will be distributed according to the fund share, and it will not be repaid after distribution. Special drawing rights are only used for intergovernmental settlement to pay the balance of payments deficit, but not for trade or non-trade payments. When a country has a balance of payments deficit, it can use the allocated SDR to exchange the required currency with the surplus country designated by the IMF. After the balance of payments has improved, the part exceeding a certain proportion must be restored.