Chinese Gold Standard Would Need a Rate 50 Times Bullion’s Price, page-2

I doubt it'll ever happen, given the points illustrated by the article.

Here's a thought: If China implements a gold standard and maintains the peg to the US dollar (and is able to), the USD would immediately become fixed to gold by proxy. Once a gold standard is implemented there will be a rush for the yuan. USD will be pressured downwards to the yuan and to maintain the peg China would sell yuan for dollars. But for every yuan it makes to sell for USD it needs some more gold, or lower the peg of yuan to gold, which makes gold even more expensive because by proxy it is now backing both yuan and USD.