The yuan ended two notches stronger versus the dollar at 8.2770 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 2,850 points implying a rate of 7.993 yuan per dollar in 12 months' time.
NDFs are transactions where a forward price is agreed between a customer and a bank, but settlement on the value date is undertaken entirely in US dollars. One-year implied yuan volatility was traded at 7.20/8.30 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 edged up to $680 million from $660 million on Monday. The yuan weakened to 7.8373 against 100 Japanese yen from 7.8322, and softened against the euro to 10.0865 from 10.0031.