Already China are buying up all the gold and there's real credible talk of China linking their currency to Gold. It'll be the only currency in the world backed by anything and there will be a massive rush to get it pushing the value up. It'll be the end of the petro-Dollar as we know now for international trade and world reserve currency.
There is absolutely zero chance that the Chinese government will link their currency to gold. China has been following the policy of driving down the value of their currency in order to promote exports for a long time. Linking their currency to gold would have the opposite effect.