Fears of a trade war between the world's two biggest economies had also receded after the administration of President Donald Trump said it had reached a deal that would put ZTE Corp back in business after banning China's second-biggest telecoms equipment maker from buying USA technology parts.
In an unexpected change in tone, the United States said on Tuesday that it still held the threat of imposing tariffs on $50 billion of imports from China unless it addressed the issue of theft of American intellectual property.
She urged the USA to keep its "word and work" with China according to the spirit demonstrated in the joint announcement.
Earlier this month, Mnuchin said in a televised interview that the prospect of a trade war with China was "on hold".
"We will counteract whatever comes our way, and if the USA insists on acting recklessly, China will inevitably adopt firm and forceful measures".
Analysts said the USA move may be an attempt to gain leverage ahead of Commerce Secretary Wilbur Ross's visit to China later this week for talks.
The White House said Tuesday that it would provide details of the Chinese products affected by the new tariffs on June 15 and that they will take effect "shortly thereafter".
But on Tuesday evening it said that sanctions announced in March - largely focused on China's theft of United States intellectual property - were still in the works and details would be announced in the coming month.
Petrol, Diesel Prices Rise For 16th Day
Compared to petrol , the state-owned Oil Companies made a decision to increase diesel prices at a much lower rate on Tuesday. Critics of the government say fuel prices were kept in check to woo voters in the southern Indian state.
"Whatever measures the U.S. takes, China has the confidence, capability and experience to defend the interests of Chinese people and the core interests of the country", it said. His comments, following meetings with Chinese President Xi Jinping's top economic adviser, fueled expectations that both sides would be able to settle their differences through negotiations.
It urged USA to act in accordance with the spirit of recent bilateral joint statement.
Its tougher stance comes as President Donald Trump prepares for a June 12 summit with North Korean leader Kim Jong Un, whose key diplomatic backer is China, and as Washington steps up efforts to counter what it sees as Beijing's efforts to limit freedom of navigation in the South China Sea.
Trump has also threatened to impose tariffs on an additional $100 billion in Chinese goods if Beijing retaliates. The two countries have not yet implemented their tariff increases.
During the media briefing, the Foreign Ministry spokesperson also expressed concern over reports that the U.S. is planning to restrict visas of Chinese students studying advanced subjects like robotics, aviation and high-tech manufacturing to one year.
Also on Tuesday, a White House official said the US government plans to shorten the length of visas issued to some Chinese citizens as part of a strategy to prevent intellectual property theft by USA rivals.
"When it comes to global relations, every time a country does an about face and contradicts itself, it's another blow to, and a squandering of, its reputation", Hua said. Of the more than a million foreign students who enrolled at universities in the USA in 2016-17 over 3.50 lakhs or about 35 per cent, were Chinese, the Open Doors study by the Institute of International Education, a non-profit organisation supported by the U.S. government, said. Observers say any visa restrictions on high tech field education could hurt China's big push into high tech manufacturing including robotics and artificial intelligence.