HANOI: Copper prices advanced on Wednesday as testimony from the US Federal Reserve's chair Jerome Powell eased worries of a rate hike soon, which traders feared could dampen liquidity into financial assets including metals and hit economic recovery.

Three-month copper on the London Metal Exchange rose 0.6% to $9,360 a tonne by 0516 GMT, while the most-traded July copper contract on the Shanghai Futures Exchange increased to 68,430 yuan ($10,556.93) a tonne.

On Tuesday, Powell reaffirmed the central bank's intent to encourage a "broad and inclusive" recovery of the job market, and not to raise interest rates too quickly based only on the fear of coming inflation.

Last week investors fretted that the central bank could tighten its policy sooner than expected, leading to LME copper dropping 8.6%, its biggest weekly fall since March 2020.