Wu Qian, a spokesman of China’s Ministry of Defense, said at the regular press briefing in Beijing on February 25, 2016, that China will send warships to participate in the the world’s largest international maritime exercise known as 'The Rim of the Pacific Exercise', or RIMPAC, which is held every two years in Hawaii in June and July. Wu Qian said “Joining these military exercises will be beneficial to improving the Chinese navy’s ability to contend with non-traditional security threats. Needless to say, military relations between China and the U.S. have some difficulties and obstacles.”