By August 2015, Vietnam had reclaimed approximately 4 acres (16,000 square meters) of land on the southeast side of Cornwallis Reef, but only about 2.2 acres (9,000 square meters) remained after Typhoon Melor struck. The outpost in August sported one building, on its southwestern end, and the footprints of several more, while excavators and other equipment were engaged in reclamation. Following the storm, no ongoing work was apparent as of December 31, though the outline of a possible building footprint could be seen.
In August, work on the southwest side of Cornwallis was more advanced than on the other side of the reef, with nearly 0.9 acres (3,600 square meters) of land reclaimed. A building was visible and excavators and other construction equipment were engaged in ongoing reclamation on both sides of the channel. In addition, a ship and what appeared to be a barge were anchored within the channel. Typhoon Melor wiped away most of this work, but Vietnamese forces quickly returned. Five excavators and some other equipment were back to work by December 31, and 4 acres (16,000 square meters) of reclaimed land was visible.
南華礁(Cornwallis South Reef)位於南沙群島中部，尹慶群礁東側，地理座標為北緯8度45分，東經114度10-12分。該礁南北長約10公里，總面積34平方公里，其中礁坪面積22.3平方公里，中間礁湖面積11.7平方公里。1988年被越南侵佔。