Trump threatens China with a massive response.. What happened between Washington and Beijing?

US President Donald imposed a massive increase in customs duties, after Beijing decided to impose additional controls on the export of rare metal technologies and elements.
China-America Conflict
Trump commented on his platform "Truth Social" Saying "It was a real surprise".
He added "She was scheduled to meet Chinese President Xi Jinping two weeks later at the Asia-Pacific Economic Cooperation (APEC) summit in South Korea, but there appears to be no longer any justification." Therefore.
The New York Stock Exchange fell sharply in light of this sudden rise in tensions between the two economic powers in the world, which were engaged in thorny trade negotiations.
The American President added that he "He will have to launch a financial counterattack" On Chinese restrictions.
Rare earth minerals
And formed