Foreign exchange is generally closed on weekends.

Forex is closed from 4 a.m. on Saturday to 6 a.m. on Monday, and trading is available at other times.

Foreign exchange is the balance of payments deficit held by monetary administrations (central banks, monetary management agencies, foreign exchange stabilization funds and the Ministry of Finance) in the form of bank deposits, Treasury bills, long-term and short-term government securities, etc. claims that can be used at the time. Foreign exchange includes foreign currency, foreign currency deposits, foreign currency securities (government bonds, treasury bills, corporate bonds, stocks, etc.), and foreign currency payment certificates (bills, bank deposit certificates, postal savings certificates, etc.). As of 2015, China ranked first in the foreign exchange reserves of governments around the world. However, the United States, Japan, Germany and other countries have large private foreign exchange reserves, and the country's overall foreign exchange reserves are much higher than those of China.