The Trump team said that on the first day of taking office, Trump would abolish the Sino-U.S. Technology Cooperation Agreement (STA). On December 13, the two countries announced that the agreement would be extended for five years starting from August 27 of this year. However, to prove that the U.S. does not need a 'spirit of contract', Trump decided to abolish it. This is how the American system works; if someone wants to default, they just change the person or modify domestic laws themselves.