"If the United States side adopts unilateral protectionist measures and damages China's interests, we will immediately react and take necessary measures to firmly safeguard our legitimate rights and interests", said foreign ministry spokesman Geng Shuang during a regular news briefing.
President Trump has approved tariffs on $50billion worth of Chinese goods which could come into force today, it has been reported.
The US president has said that he wants them to be imposed by the end of the month.
China could be a little bit upset about trade because we are very strongly clamping down on trade.
As we've argued elsewhere, Trump appears to be targeting allies as a means of rupturing their mindset-convincing them that they are no longer deserving of American coddling just because of their geopolitical status.
The White House has said it is proceeding with plans to impose duties on US$50 billion (S$66.7 billion) of Chinese goods, after weeks of high level-discussions between the USA and China yielded little progress.
In April, the U.S. revealed an initial list targeting about 1300 products worth $US50 billion in Chinese imports.
China has previously threatened to respond with proportional duties on everything from American soya beans to airplanes.
"The biggest and darkest cloud that we see is the deterioration that is prompted by the attempt to challenge the way in which trade is being conducted, in which relationships have been handled, and the way in which multilateral organizations have been operating". But at the last round of talks in Beijing, China warned that it will withdraw any commitments if Mr Trump carries out his threat to impose duties.
Under the 1974 trade law that Trump invoked to pursue a tariff investigation into China's intellectual property practices, he could delay the activation by 30 days.
While it is easy to dismiss such language as characteristic Trump hyperbole, weaponized to soften up negotiating partners, it is notable that the president's recently imposed tariffs on steel, aluminum, washing machines, and solar panels actually reflect, remarkably, "worse than China" thinking.
"That would be my baseline case: that they are going to publish a final list on Friday with an effective date of July 1", said Mr Murphy, who sits on a trade committee that advises the Commerce Department and US Trade Representative's office.
Nearly 125 companies testified in Washington during three days of hearings last month to collect feedback over the tariffs.
"If you end up with a tariff battle, you will end up with price inflation, and you could end up with consumer debt".
The meeting between the leaders of the United States and the Democratic People's Republic of Korea (DPRK) has important historic significance, as it brought the Korean Peninsula nuclear issue onto the right track of dialogue and peaceful settlement, Wang said.
The administration's trade hawks, including U.S. Trade Representative Robert Lighthizer and White House trade and manufacturing adviser Peter Navarro, have advocated a tougher approach to address U.S. allegations that China has misappropriated American intellectual property through joint venture requirements, state-backed acquisitions of U.S. technology firms and outright theft.
The tariffs move would come against the backdrop of heightened tensions between the U.S. and its traditional trading and security partners.