Currently, sand retrieval and backfilling work is being carried out on Slavonic island in the Maldives. The entire project is mainly divided into four areas, including Area A, Area B, Area E and Area F. Taking into account factors such as the regional geographical location, the amount of backfilling work, and the construction efficiency of the rake and suction ship, the order of backfilling is: Area B, Area A, Area E, and Area F. The blowing and filling of area B has been successfully completed, and the blowing and filling of area A will be carried out soon.