The first joint exercise will involve the US aircraft carrier USS George Washington and start July 25 in the Japan Sea. The two sides plan to stage other drills in both the Japan Sea and the Yellow Sea, too.
"We firmly oppose foreign warships and military aircraft entering the Yellow Sea and other coastal waters of China to engage in activities affecting China's security and interests," Qin said when asked to comment on the drills.
Qin urged relevant parties to exercise calm and to refrain from acts that might escalate tension in the region.
"China's stance on the ROK-US drills is clear...We will closely watch developments in the situation," Qin said.