A law enforcer is pictured during a formation collaboration training aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, Feb. 28, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers of the China Coast Guard (CCG) vessel Sandu conduct motor boat maneuver training in the South China Sea, March 6, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers of the China Coast Guard (CCG) vessel Sandu visit a fishing boat in the South China Sea, March 4, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers are pictured at bow deck of the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 1, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

This photo taken on Feb. 28, 2026 shows a sunset view in the South China Sea. The China Coast Guard (CCG) vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers conduct search and rescue training aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer works on maps aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 6, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers of the China Coast Guard (CCG) vessel Sandu conduct motor boat maneuver training in the South China Sea, March 6, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/He Xinyuan)

Law enforcers conduct access and control training aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer speaks on the phone with his kin during his break time aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer cuts hair for his colleague aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers play a board game during their break time aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer patrols aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers of the China Coast Guard (CCG) vessel Sandu conduct diving training in the South China Sea, March 1, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers watch live news report on TV aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 5, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/He Xinyuan)

Law enforcers conduct formation collaboration training aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, Feb. 28, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers make tangyuan (glutinous rice balls, a traditional Chinese snack) aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 2, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

Law enforcers conduct firefighting training aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/He Xinyuan)

A law enforcer of the China Coast Guard (CCG) vessel Sandu provides medical service to a fisherman in the South China Sea, March 4, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer jogs aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer watches out aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 6, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)

A law enforcer prepares dinner aboard the China Coast Guard (CCG) vessel Sandu in the South China Sea, March 8, 2026. The CCG vessel Sandu conducted patrols in the South China Sea to safeguard China's territorial sovereignty and maritime rights and interests. (Xinhua/Mao Jun)