This photo taken on October 22, 2018 shows Chinese sailors marching during the opening ceremony of the ASEAN-China Maritime Exercise at a military port in Zhanjiang, in China's southern Guangdong province. - China and Association of Southeast Asian Nations (ASEAN) states kicked off their first joint maritime exercises on October 22 in an effort to ease regional tensions linked to rival claims in the South China Sea. (Photo by STR / AFP) / China OUT        (Photo credit should read STR/AFP/Getty Images)