Hong Kong (CNN Business) Asia stocks jumped Wednesday, following Wall Street's rally as the US central bank signaled a rate cut and worries about the escalating trade war took a backseat.

Tokyo'sled the charge, rising 1.9% in morning trade. Hong Kong'sand thegained around 0.5%.

Driving the market upswing were comments from US Federal Reserve Chairman Jerome Powell, who said that the central bank was closely monitoring developments on the trade front

"As always, we will act as appropriate to sustain the expansion," he said Tuesday at a monetary policy conference in Chicago.

The, theand therecorded their best days since January 4 following Powell's comments.

Worries about trade wars on multiple fronts and fears of a slowing Chinese economy have rattled investors of late.

President Xi Jinping tried to tamp down macroeconomic concerns during a state visit to Russia on Tuesday, telling reporters that China's economy is stable, healthy and can support sustainable development, according to state news agency Xinhua.

But there is still uncertainty over how the United States will resolve escalating trade wars with China and Mexico, two of the country's biggest trading partners.

Tit-for-tat punitive measures from the United States and China have sent markets on a roller coaster for months.