8 US gross domestic product data is due later on Thursday to gauge the strength of the world's largest economy as it struggles with the coronavirus pandemic.
Separately, traders were awaiting comments later from US Federal Reserve Chair Jerome Powell, who is likely to renew a commitment to ultra-easy policy. His remarks could affect the dollar and other currencies.
The yuan's gains were partly capped as a central bank adviser said China should relax capital outflows measures following sharp gains in the yuan in recent months. Too strong a currency could hurt the country's exporters.