(Guichou in the first month on the 20th), February 22, 1973, the United States and China agreed to establish liaison offices in both capitals.

1972 February 22, 2010, after Nixon's visit to China, the two sides reach an agreement, the mutual establishment of liaison offices in their respective capitals. Attaches great importance to the establishment of the U.S. Liaison Office in China, especially in the send and reception staff, the government and senior leaders of the two countries. China is given a very high diplomatic status, "Although there is no embassy in the name of the U.S. Liaison Office in China, there embassy in reality. The establishment of the U.S. Liaison Office in China not only has a very important symbolic significance, but also laid a solid foundation for the normalization of Sino-US relations.