Chinese frigate Xiangtan sets sail from a military port in Zhoushan, east China's Zhejiang Province, April 26, 2019. With a displacement of over 4,000 tonnes, frigate Xiangtan will bring a helicopter and a special forces team to join an international live-fire exercise in waters near the Republic of Korea (ROK) and Singapore, which will last from April 29 to May 15 as a part of the ASEAN Defence Minister's Meeting-Plus. (Xinhua/Zhang Qian)