A little old, but relevant to the topic.
http://www.bbc.com/news/world-asia-china-29139125
http://www.bbc.com/news/world-asia-china-29139125
The BBC report by Rupert Wingfield-Hayes said China was building new islands on five different reefs.
He and his team documented Chinese work to dredge tonnes of rock and sand from the sea floor to pump into Johnson South reef in the Spratly islands, which are also claimed by Manila.