The yanks financials don't like gold showing its head whilst they try to maintain (hold up) an indebted struggling world currency "the US dollar".
China like gold but they hold a large basket of US dollars. So as China unloads this encumbrance they like a low gold price for accumulation.
Its that simple in my view but DYOR.
And thinking the Aussie dollar will fall (many here seem to) is also an error in my view. Our assets (primary production, wool, ion ore and !!!gold etc.) in Aus a far superior to almost all other countries, as measured particularly against or small population, many going to the wall as I type. China too is in massive debt.