The Chinese currency, or the yuan, on Wednesday gained 39 basis points to 6.5586 per U.S. dollar from Tuesday.

On China's foreign exchange spot market, the yuan can rise or fall 0.5 percent from the central parity rate each trading day.

The central parity rate of the RMB against the U.S. dollar is based on a weighted average of prices before the opening of the market each business day.