China not only stole intellectual property, took away billions of dollars from the USA and offshored the jobs, but also violated its commitment under the World Trade Organization, he said, adding that it was able to get away with the theft, like no one before because of past politicians and past presidents.
Trump visited China in his first year as President.
And there are many of them, and he said the full range of agreements is basically on the table - from the US extradition treaty with Hong Kong to export controls on dual-use technologies.
Secretary of State Mike Pompeo on Wednesday informed Congress that the Trump administration would no longer consider Hong Kong to be separate under U.S. law, but it was up to Trump to spell out the consequences.
"We welcome all parties of the United States to continue development and achieve greater success in Hong Kong", said Zhao.
Trump said the State Department will revise its travel advisory for Hong Kong to caution US citizens of increased surveillance by Chinese state security and added that the city will now face the same customs restrictions as the mainland.
Trump signs executive order on social media
However, resetting the boundaries of how the mammoth companies operate would likely hit immediate legal and political roadblocks. A Twitter spokeswoman declined comment on Trump's tweets. "And we will admit to and own any mistakes we make", he writes.
The move would be certain to draw criticism not only from China but from universities, which rely increasingly on tuition from foreign students and have already been hit hard by the COVID-19 shutdown. He didn't provide specifics, but officials said this week that the administration was considering expelling thousands of Chinese graduate students enrolled at US universities.
WHO, an agency of the United Nations, has always been swayed by Beijing's political preferences.
More than 102,000 people in the U.S. have lost their lives to Covid-19 - by far the biggest death toll in the world.
"They broke their word to the world on ensuring the autonomy of Hong Kong", Mr Trump said from the White House, where he also blamed China for a "cover up" of the coronavirus outbreak.
"We urge the USA to immediately stop this senseless political manipulation", foreign ministry spokesman Zhao Lijian said in Beijing, saying China would not allow the USA to "kidnap the Council for its own purposes". He'll take action to revoke Hong Kong's treatment as a separate customs and travel territory from the rest of China, which is huge.
The WHO therefore only has control over the spending of countries' "assessed contributions" from member states, which are calculated based on their wealth and population.
Legislation on national security for Hong Kong is purely China's internal affairs.
Beijing says the new legislation, likely to come into force before September, will tackle secession, subversion, terrorism and foreign interference in the city. "I want to underline this - respect and trust - but this decision calls this into question".