(Yicai Global) May 27 --  The People's Bank of China fixed the yuan's central parity rate against the US dollar 69 basis points lower at 6.8924 today. It is the biggest change since April 18. A lower rate means a firmer yuan. 

The China Foreign Exchange Trade System, the interbank trading and foreign exchange division under the central bank fixes the benchmark parity rate on the morning of each business day. Spot rates may deviate 2 percent above or below the figure.