Xinhua Headlines: 40 years on, only by cooperation can China, U.S. cope with perplexities in ties

In this file photo dated on July 24, 1997, Henry Kissinger, former U.S. Secretary of State, attends a ceremony to mark the 25th anniversary of "Ping-Pong Diplomacy", which opened the door for China-U.S. people-to-people contacts, in New York, the United States. (Xinhua)