China's Shanghai Composite index rise 0.27%
The dollar sank to levels last seen four years ago after U.S. President Donald Trump said he was not concerned about the weakening.
Gold broke through $5250 for the first time as U.S.-Iran tensions escalated and a partial U.S. government shutdown loomed over an immigration dispute.
Oil prices were steady in Aian trade following a dramatic 3 percent surge on Tuesday, the sharpest daily increase in months, after a winter storm disrupted U.S. crude output and exports.
China's Shanghai Composite index rose 0.27 percent to 4,151.24 as a firmer PBOC fixing lifted the offshore yuan to a 32-month high.
Hong Kong's Hang Seng index rallied 2.58 percent to 27,826.91 after China Vanke secured a 2.36-billion-yuan (US$339.3 million) loan from Shenzhen Metro Group, its largest shareholder, to repay bond principal and interest.
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