In comparing America's economy with China's, for instance, whether you convert yuan into dollars at market exchange rates or after adjusting for purchasing power matters a lot.

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In effect, you transfer the dollar account into a yuan account in the form of a Bank of China CD that will yield you next to nothing.

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Still, you no doubt remain of the belief that a yuan weakened by its dollar peg somehow makes Chinese goods more attractive on the world market.

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"If you are looking for a support level for the onshore yuan, just look at the offshore market, " said a Shanghai-based trader with a foreign bank.

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On the other hand, you can buy one of my trucks for 200, 000 yuan.

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