" It was the fundamental appraisal that the world had transitioned from the 'age of war and revolution' to the 'age of peace and development' that allowed China to make a fresh start on its domestic and foreign policies: Domestically, it replaced 'class struggle as the key link' with 'economic construction as the focus,' and externally, it abandoned the 'three fights and one increase' in favor of openness to the outside world, joining the Word Trade Organization and merging itself into the international mainstream. "

― , The World Turned Upside Down: A History of the Chinese Cultural Revolution