"We don't want to fight, but we aren't afraid to", Hua said at a regular news briefing.
Moody's said the new tariffs would weigh on the global economy at a time when growth is already slowing in the US, China and the eurozone.
The U.S. Treasury Department declined in May to label China a currency manipulator but said it was closely watching Beijing.
The newly proposed wave of duties would extend Trump's tariffs to almost all of the Chinese goods that the United States imports. HOW TARIFFS REALLY WORK U.S. Customs and Border Protection (CBP) collects the tax on imports.
Yet Trump pointedly did not call off the talks (although China very well might in response to the latest broadside).
Oil prices fell by the most in over three years on the same day after Trump said that his administration would launch a 10% tariff on an additional $300bn of Chinese goods on 1 September. Exporters sometimes, for instance, may offer USA importers a discount to help defray the costs of higher US duties and maintain their contracts and market share.
Donald Trump Attacks Al Sharpton as ‘Con Man’ in Twitter Outburst
Elijah Cummings (D-Maryland), he moved on to attack to Rev, Al Sharpton . Trump fired back, calling Sharpton a "con man".
United States retail associations predicted a spike in consumer prices. The president later told reporters he's "not concerned at all" about the negative reaction from markets.
Trump said there were no plans to reverse a decision made in Osaka to allow more sales by USA suppliers of non-sensitive products to blacklisted Chinese telecoms giant Huawei Technologies Co.
His earlier tariffs had been created to minimise the impact on ordinary Americans by focusing on industrial goods, but the new tariffs will hit American consumer products manufactured in China like iPhones, shoes and toys. "Also, China may impose fines and restrictions over services vendors with large presence in Greater China".
The measure will hit US consumers far harder than Chinese manufacturers, which produce 42 percent of apparel and 69 percent of footwear purchased in the US, Lamar said.
Economists say the trade war has increasingly undermined the global manufacturing sector and sapped business sentiment, threatening the global economy at a time when it is already on the wane. "I expected that."Washington accuses China of using a state-directed economic model, unfairly subsidising production and stealing USA technology".
A spokeswoman for China's foreign ministry warned the country would retaliate against the U.S. for imposing tariffs. "They're praying. They would like to see a new president in a year and half so they can continue to rip off the United States like they've been doing for the last 25 years".
China is also drafting a list of "unreliable entities" - foreign firms that have harmed Chinese interests. "China is prepared to live with the pain rather than make the changes the USA wants". They were the first in-person meetings since talks broke down in early May.
"The tariffs announced today will raise costs on everything from computers to backpacks to clothes as kids go back to school, without any reason to think that it will make China stop stealing our technology and undercutting American jobs".