A destroyer from the Republic of Korea, Chungmugong Yi Sun-sin, arrives at a military port in Shanghai for a four-day visit, Jan 14, 2019. (Photo: China Daily)

A destroyer from the Republic of Korea, Chungmugong Yi Sun-sin, arrives at a military port in Shanghai for a four-day visit, Jan 14, 2019. (Photo: China Daily)

A destroyer from the Republic of Korea, Chungmugong Yi Sun-sin, arrives at a military port in Shanghai for a four-day visit, Jan 14, 2019. (Photo: China Daily)

A destroyer from the Republic of Korea, Chungmugong Yi Sun-sin, arrives at a military port in Shanghai for a four-day visit, Jan 14, 2019. (Photo: China Daily)