China's Gen. Chen Bingde (right) and Adm. Mike Mullen, who is on a four-day visit to China, disagree on the propriety of American naval exercises with its allies on the South China Sea. (Associated Press)

China's Gen. Chen Bingde (right) and Adm. Mike Mullen, who is on a four-day visit to China, disagree on the propriety of American naval exercises with its allies on the South China Sea. (Associated Press)