The U.S., Australia and Japan conducted joint drills in the South China Sea in July as the U.S. military continued to step up its excursions into the area with warplanes and warships. Washington sent military aircraft to the South China Sea region more than 2,000 times in the first half of 2020 while accusing China's routine training exercises a threat to regional stability. Who's the destructive factor of the regional situation in the South China Sea?