Trump again defended the introduction of additional duties on Chinese imports.
On Thursday, a statement from the Chinese government - released just before the start of USA trading - helped to lower the tension.
Thousands of Chinese soldiers paraded on Thursday in a large sports stadium in Shenzhen city, just seven kilometers from the Hong Kong border. Tariffs will still apply to those products starting in mid-December.
As before, Republicans were more likely than Democrats to be negative on China. The ruling Communist Party is preparing to celebrate its 70th anniversary in power on October 1 - a nationalism-drenched milestone that puts pressure on Xi, the party leader, to look tough. Risks are still to the downside. Hong Kong's property market, one of the world's most expensive, would be hit hard in that scenario, it added.
On Friday it emerged that five people aged between 20 and 22 had been arrested for pulling down a Chinese flag and throwing it into the sea.
Trump tweeted that delaying the tariffs would help China more than the U.S. ME is the sole commercial producer of wild blueberries in the United States, and the industry has struggled in recent years with falling crop sizes and low prices to farmers. The ruling Communist Party newspaper accused Washington of "American bullyism".
Trump and President Xi Jinping agreed in June to resume negotiations but neither side has indicated a willingness to compromise. Trump said Thursday that an agreement with China has to be on "our terms", according to Fox Business. On paper, he is right. Previous rounds of tariffs targeted component parts that manufacturers such as auto companies bring into the United States to assemble their final products. But so what? Washington should guard America's economic prosperity and military capabilities.
The U.S., Japan, Europe and other partners complain Chinese plans for government-led creation of global competitors in robotics, electric cars and other technologies violate Beijing's market-opening obligations.
His comments were seized upon by Chinese media as an example of America "grossly interfering" in Beijing's affairs.
A spokesperson for the Office of the Commissioner of the Chinese Foreign Ministry in the Hong Kong Special Administrative Region said that the US, specifically some US Congressmen, were "the black hands behind the violent extremists". But now, he has gathered support and "can dig in for the long haul". His words are emblematic of a foreign policy approach that focuses narrowly on a trade deal with China, putting it above promoting American values. "I doubt Chinese side will resume large-scale purchase of U.S. farm products under current circumstances", Hu tweeted. "I mean, Donald Trump's political strength is premised on the idea that he has maintained and protected and cultivated a strong economy". The tariffs and restrictions imposed to generate leverage in trade negotiations would become permanent.
"If Hong Kong can not really restore the rule of law through its own strength, and the riots in Hong Kong will intensify, then the central government will take measures directly in accordance with the Basic Law", it warned.
"The U.S. has realized that its maximum pressure strategy to force China back to the negotiating table has not worked as expected".
Mr Trump said last month that Mr Xi had acted "very responsibly" in dealing with the protests.
"Trump is looking for a way out".
European stocks declined and US equity futures fell. "Therefore, China should not retaliate - will only get worse!"
A weaker yuan would make Chinese exports cheaper overseas and help to offset Trump's tariff hikes.