How long is the honeymoon period between China and the United States? What are the military exchanges between the two countries?

In the1980s, there was a relationship between China and the United States. The American people witnessed the existence of the honeymoon period, which ended on 1989.

The most famous thing is that the United States exported Black Hawk helicopters to us and promised to help China transform our J-8-2 aircraft. Mainly to transform the avionics system, search radar and fire control radar of the J-8-2 aircraft. The plan was put forward by the Americans. At that time, China and the United States also reached an agreement, and the Americans named it the "Pearl of Peace" project.