The yuan ended unchanged versus the dollar at 8.2769 on Tuesday, remaining near the stronger end of its managed trading range.
The one-year non-deliverable dollar forward discount versus the yuan was at 3,550 points implying a rate of 7.923 yuan per dollar in 12 months' time.
One-year implied yuan volatility was traded at 7.50/9.00 percent on Tuesday.
Implied volatility is a measure of how much the options market expects the price of the underlying asset to move during the life of the option.
The yuan moves in a band of 8.2760 to 8.2800 enforced by the central bank.
Turnover for the day was temporarily unavailable. It rose to $590 million on Monday.
The yuan strengthened to 7.7903 against 100 Japanese yen from 7.9001, and firmed against the euro to 9.9554 from 10.0171.