Boy, aren't we all on a soapbox today?
It really doesn't take long to go from a creditor to a debtor nation.
And, vice versa.
Futhermore, an important valuation needs to be included in your bashings.
What would happen if the yuan was not indirectly tied to the U.S. dollar?
And, also, what effect would the price of oil have on China if the price
of oil was not indirectly tied to the U.S. dollar?
The exchange rate of the U.S. dollar is just important to China as it is to the U.S.
(Including and excluding the amount of U.S. dollars controlled by China.)
I'm not going to debate it here. However, it is extensively discussed in
the world of International finance.