In today’s FT, Martin Wolf writes about China’s $2.1 trillion in foreign currency reserves:

It is little wonder such a huge exposure makes the Chinese government nervous. But nobody asked the Chinese to do this. On the contrary, US policymakers have consistently (and wisely) advised them to do the opposite. Having made what I believe was a huge mistake, the Chinese government cannot expect anybody to save them from its consequences.

A substantial appreciation of the Chinese currency is inevitable and desirable in the years ahead. The longer the Chinese authorities fight it, the bigger their losses (and the pain of adjustment) are going to be. What they have to do is cut those losses, by ceasing to accumulate yet more reserves.