China on Wednesday pledged to make its exchange rate more “flexible”, a day after the United States said the yuan was undervalued, though it declined to name Beijing a currency manipulator.

“China will continue to increase the flexibility of the renminbi (yuan) exchange rate,” Foreign Ministry spokesman Hong Lei told a regular news briefing in Beijing.

But in stronger remarks, China’s state news agency urged the United States to put an end to a “meaningless quarrel” over its yuan currency.

The US Treasury said Tuesday that China’s yuan is still significantly undervalued, although it refrained from saying Beijing manipulates the currency, which could lead to retaliatory action by Congress.

China’s official Xinhua news agency praised the US Treasury decision in a commentary, saying it sent a “positive signal” that would soothe financial markets and promote trade.