The USA had an embargo in place with China, due to having fought the Chinese in Korea during the Korean war. For 20 years no American set foot in PRC territory. At last though, the American table tennis team was sent to China. How was this possible? Was this a private initiative or part of U.S. foreign policy.
In 1971 or thereabouts, President Richard Nixon decided on a policy of "normalization" of relations with China. The arrival of the U.S. pingpong team was the first "feeler" in this process.
This was followed in 1972 by President Nixon's historic visit to China, ending the "Cold War" between the U.S. and China.