The yuan finished two notches stronger at 8.2766 per US dollar on Thursday, near the stronger end of its managed trading range.
The one-year non-deliverable dollar forward discount versus the yuan was at 2,800 points implying a rate of 7.998 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 5.9/6.50 percent on Thursday.
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, a moderate $650 million on Wednesday, was not immediately available.
The yuan strengthened to 7.5253 against 100 Japanese yen from Wednesday's 7.5530, and firmed against the euro to 10.0564 from 10.1315.