Cheng Siwei, former vice-chairman of the Standing Committee and now head of China's green energy drive, said Beijing was dismayed by the Fed's recourse to "credit easing".
"We hope there will be a change in monetary policy as soon as they have positive growth again," he said at the Ambrosetti Workshop, a policy gathering on Lake Como.
"If they keep printing money to buy bonds it will lead to inflation, and after a year or two the dollar will fall hard. Most of our foreign reserves are in US bonds and this is very difficult to change, so we will diversify incremental reserves into euros, yen, and other currencies," he said.
China's reserves are more than – $2 trillion, the world's largest.
"Gold is definitely an alternative, but when we buy, the price goes up. We have to do it carefully so as not to stimulate the markets," he added.
The comments suggest that China has become the driving force in the gold market and can be counted on to
buy whenever there is a price dip, putting a floor under any correction.
Mr Cheng said the Fed's loose monetary policy was stoking an unstable asset boom in China. "If we raise interest rates, we will be flooded with hot money. We have to wait for them. If they raise, we raise.
"Credit in China is too loose. (continues here at Telegraph)