USD

maybe they want commodity fly, but that not weak dollar. china have to pay that, because they do not revalue their currency.

"a few days ago, someone on bloomberg said "do not fight to fed" "
Exactly. The Fed wants weak dollar despite that in official statements they are for stronger dollar.
Ask yourself: If the US administration does not want weak dollar, why do they bother requesting China to let the yuan appreciate? Or why the US administration recently requested Germany to balabnce their current account? Good luck.
And by the way if you read Friedrich Hayek work you would most probably be able to foresee where the world economy is headed. After all he is one of the few known economists to have predicted the Great Depression.
You can lead a horse to water, but you can't make it drink.

if china dump us bonds in market, us will very happy, because they can buy all back with nothing. at that time, only us can hold that huge plate.

zhou xiaochuan: "we can export hot money by invest in foreign county"

well, i don't think so.

The point is we (continental) Europeans we want a strong Europe Merkel wants a strong Germany at the expense of the rest. History is a guide it has never worked and will never work.
Actually Europe has fallen back in medieval structures.... little princes with small princedoms everywhere. That is the outcome of German politics.

So things must have moved forward from WW.II. Here we catnip from germany hating germany and me from england admiring germany