![Naval vessels take part in a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, on April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/ffd4f227e1894bce95e25839f2f606ad.jpg)
Naval vessels take part in a joint naval exercise on the sea off Qingdao, east China's Shandong Province, on April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)
![A helicopter takes off from a Chinese naval vessel during a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/857bb08cfd2a4dd9ae04d1559704a01f.jpg)
A helicopter takes off from a Chinese naval vessel during a joint naval exercise on the sea off Qingdao, east China's Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)
![Chinese officers participate in a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, on April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/5d88534d87214978a2055ac842aa5ab9.jpg)
Chinese officers participate in a joint naval exercise on the sea off Qingdao, east China's Shandong Province, on April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)
![A Thailand naval vessel participates in a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/9f4d33ee48f7445d905c446b0e6d4048.jpg)
A Thailand naval vessel participates in a joint naval exercise on the sea off Qingdao, east China's Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)
![A helicopter takes off from a Chinese naval vessel during a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, on April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/0d9ebf7ec9d04ce98c80f3e9474c825d.jpg)
A helicopter takes off from a Chinese naval vessel during a joint naval exercise on the sea off Qingdao, east China's Shandong Province, on April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)
![A Vietnam naval vessel participates in a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/8f3c2a6471534668834b52d2f77d136a.jpg)
A Vietnam naval vessel participates in a joint naval exercise on the sea off Qingdao, east China's Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)
![Foreign naval vessels participate in a joint naval exercise on the sea off Qingdao, east China\'s Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)](http://www.ecns.cn/hd/2019/04/27/2f7b60d359e44352a7b05bda2153db78.jpg)
Foreign naval vessels participate in a joint naval exercise on the sea off Qingdao, east China's Shandong Province, April 26, 2019. China conducted a joint naval exercise with Southeast Asian countries in Qingdao, with focus on jointly handling maritime emergency rescues. (Photo: China News Service/Li Chun)