The yuan slipped a notch versus the US dollar at 8.2769 on Thursday, remaining near the stronger end of its managed trading range.
The one-year non-deliverable dollar forward discount versus the yuan was at 2,600 points implying a rate of 8.018 yuan per dollar in 12 months' time.
One-year implied yuan volatility was traded at 6.80/7.75 percent on Thursday.
The yuan moves in a band of 8.2760 to 8.2800 enforced by the central bank.
Turnover for Thursday was temporarily unavailable. It fell to $610 million on Wednesday.
The yuan strengthened to 7.5016 against 100 Japanese yen from 7.5859, and firmed against the euro to 9.7882 from 9.8570.