The yuan ended two notches weaker versus the dollar at 8.2772 on Monday, 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 7.00/8.50 percent on Monday.
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 rose to $660 million, up from Friday's $487 million.
The yuan weakened to 7.8322 against 100 Japanese yen from 7.8112, but firmed against the euro to 10.0031 from 10.0445.