The United States and China began imposing tariffs on each other’s goods Sunday, intensifying the trade war between the countries even as President Trump said talks would resume this month.

“We are talking to China. The meetings in September, that hasn’t changed,” Trump said as he returned to the White House from Camp David. “We’ll see what happens, but we can’t allow China to rip us off anymore as a country.”

China sounded a defiant tone.

“The United States should learn how to behave like a responsible global power and stop acting as a ‘school bully,’ ” the state-run Xinhua news agency said.

“As the world’s only superpower, it needs to shoulder its due responsibility and join other countries in making this world a better and more prosperous place. Only then can America become great again.”

The Trump administration slapped 15 percent tariffs on more than $125 billion in Chinese goods, including shoes, clothing and household appliances like coffee makers, toasters and microwaves.

China also started placing tariffs on $75 billion worth of US imports, including 5 percent duties on US crude oil.

The US is expected to launch a second round of 15 percent tariffs on about $160 billion of Chinese goods on Dec. 15 targeting toys, cellphones, video games and laptop computers.

Trump continued to claim that China would pay for the tariffs, despite an estimate by JPMorgan that his tariffs would cost the average US household $1,000 a year.

“They are paying for their tariffs … We’re taking in tens of billions of dollars,” Trump said. “We’re giving some of the money to the farmers. I’m making the farmers more than whole. The farmers are doing better than if China, frankly, were buying.”

In July, the White House unveiled a $16 billion aid package designed to help farmers who took a financial hit because of the tariffs on Chinese products.

The trade tiff has been blamed for a slowdown in world markets, and Wall Street suffered a volatile August as investors worried about the instability creating an economic downturn.

“We have got a great economy,” Sen. Pat Toomey (R-Pa.) said on ABC’s “This Week.” “But I do think that the uncertainty caused by volatile tariff situation and this developing trade war could jeopardize that strength and that growth, and that is . . . a legitimate concern.”

AFL-CIO President Richard Trumka credited Trump for “taking on China” but said, “He’s doing it the wrong way.”

“To take on China, there has to be a multilateral approach. One country can’t take on China to try to dry up its overcapacity because they just send it through to you in other ways,” he told Fox News.

Washington and Beijing have been embroiled in a trade war for about two years after the Trump administration accused China of stealing intellectual property and restricting market access to US companies.

With Post Wires​