China keeps its exchange rate tightly fixed to the dollar. Its productivity growth and trade surplus have been high, and it continues to accumulate large dollar reserves. Many observers take this as evidence that the renminbi is undervalued and should be appreciated to reduce the Chinese trade...

Under the world dollar standard, a discrete appreciation by a dollar creditor country of the United States, such as China or Japan, has no predictable effect on its trade surplus. Currency appreciation by the creditor country will slow its economic growth and eventually cause deflation but...