Right hand shake hands and make a fist in the left hand? US media said that the Japanese submarine appeared in the South China Sea to test the bottom

Right hand shake hands and make a fist in the left hand? US media said that the Japanese submarine appeared in the South China Sea to test the bottom: Japan sends information through the submarine in the South China Sea" on September 18, saying that a Japanese submarine recently participated in a military exercise held in the South China Sea. Currently visiting in Vietnam. Analysts believe that with the development of relations with competitors,