The PBOC follows a managed floating exchange rate system that allows the value of the yuan to fluctuate within a certain range, called a "band," around a central reference rate, or "midpoint." It's currently at +/- 2%. The previous close was 6.9784.Injects 86.1bn yuan, 7-day RRS, 1.4% This article was written by Eamonn Sheridan at investinglive.com.