The Chinese currency weakened 0.21 percent against the U.S. dollar Friday, two days after the Federal Reserve's benchmark interest rate hike.
The central parity rate of the yuan weakened 143 basis points to 6.7995 against the dollar, according to the China Foreign Exchange Trade System.
Under China's market-based, managed floating exchange rate system, the yuan can rise or fall by 2 percent against the dollar from the central parity rate in the spot market each trading day.
The central parity rate is a weighted average of quotes from dealer banks, and follows a formula based on the previous day's closing rate and changes in a basket of selected currencies.
Overnight, the dollar rose against other major currencies after the Fed raised interest rates by 25 basis points Wednesday, the second time this year, and unveiled plans to start trimming its 4.5 trillion-dollar balance sheet.
The dollar index, which measures the greenback against six major peers, was up 0.56 percent to close at 97.48.
Measured by the central parity rate, the yuan has appreciated more than 2 percent against the greenback so far this year, with more than half of that seen in the past month.
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