China has been building artificial islands in the disputed region. See how they convert reefs into military facilities.
2. Fiery Cross Reef
According to AMTI China has claimed nearly 3 million square metres at Fiery Cross Reef and satellite imagery clearly shows the construction of an airstrip is in progress. This would allow military aircraft to land and port facilities under construction can be use to dock military tankers.
This includes a development of cement plants, air defence guns, possible gun emplacements, radar towers, helipads and lighthouses.