As a chief interpreter for Nixon's 1972 ice-breaking trip to China, American senior diplomat Chas Freeman was a witness to the normalization of China-U.S. ties when the Shanghai Communique was signed. The recent years have witnessed the world’s most critical relationship nosedive to a dangerous point. In the first half of the program, we talked to Mr. Freeman to have his insights on the ups and downs China-U.S. ties. He’s also a former U.S. assistant secretary of defense and senior fellow from Watson Institute for International and Public Affairs at Brown University. In the second of the program, we have Chen Dongxiao, president of the Shanghai Institutes for International Studies, to continue our discussion on China-U.S. relations.