Gold is a precious metal and copper is a commodity, both of which are risky assets. Risk assets will be affected with the introduction of monetary policies in major countries. Expansive monetary policy will increase investors' risk preference and push up the price of risky assets, while tight monetary policy will reduce investors' risk preference and turn to those recognized "safe havens"-safe assets.

As a commodity and strategic material, copper price is mainly affected by the strong demand of BRIC countries and the potential threat of war in the world. At present, countries are busy issuing bonds to stimulate the economy, and the war is still far away for the time being. Whether the BRIC economies recover steadily has the greatest impact on copper prices.