Beijing has used both natural and artificial islands to build up its military capabilities in the area.
Island airbasesAn airfield, buildings, and structures on the artificial island built by China at Subi Reef on October 25.
Port for Chinese warshipsAn airfield, buildings, and structures on the artificial island at Fiery Cross Reef on October 25.
More than 40 vessels of different types appear to be anchored near Fiery Cross, the Associated Press said in March.
These islands have sports fieldsAn airfield, buildings, and recreational facilities on the artificial island at Fiery Cross Reef on October 25.