U.S. Secretary of State John Kerry (L) and U.S. Treasury Secretary Jacob Lew (M) visit Badaling Great Wall in Beijing, July 8. (CNS/Hou Yu)

　　U.S. Secretary of State John Kerry (L) and U.S. Treasury Secretary Jacob Lew (M) visit Badaling Great Wall in Beijing, July 8. They are accompanied by U.S. ambassador to China Max Baucus (R). (CNS/Hou Yu)