BEIJING (REUTERS) - Two Chinese civilian aircraft landed on Wednesday (July 13) at two new airports on reefs controlled by China in the Spratly islands in the South China Sea - Mischief Reef and Subi Reef - the official Xinhua news agency said.

The aircraft then returned to the southern Chinese island province of Hainan, from where they had taken off, it said in a brief story on one of its official microblogs.

It was not immediately clear if both aircraft visited both of the reefs, or if one went to one reef, and the other to the other reef.