Pakistani naval ships - the China-made Shamsheer frigate and Nasr supply ship - arrive in Shanghai for a 7-day goodwill visit on Dec. 28, 2015. (Photo/81.cn)
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Pakistani naval ships - the China-made Shamsheer frigate and Nasr supply ship - arrive in Shanghai for a 7-day goodwill visit on Dec. 28, 2015. (Photo/81.cn)