London market:/kloc-In the 9th century, London replaced Amsterdam as the international trading center for gold bars and coins, and became the "barometer" of the world gold market. New york market: 1933 was established and 1974 started futures trading, making it the largest gold futures exchange in the world. Chicago market: It is also a feature of futures trading, mostly short selling, and the trading volume is second only to that of new york. Zurich market: the world free gold trading center formed during World War II is the spot gold market second only to London. Hong Kong market: Founded in 1909, it mainly traded gold and silver coins at first, and now it is the most important gold market in Asia.