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A number of Asian currencies have gained, on news about the Yuan.
South Korea's Won surged over 2 percent to hit a one-month high against the dollar. That's because a more flexible yuan is expected to lift demand in South Korea's top export market. India's rupee rose 1.2 percent against dollar, hitting its highest level in more than a month.
The Australian dollar jumped more than 1 percent, and the euro also hit a four-week high against the dollar.