When the sea breeze blows into labour battalions to shore will make the sand sediments in offshore drift pile up behind a coastal dune or is blowing out at the coast to the piles into the sea in San Sai.
When a breeze blows sand into contact with the shore, they were swept away in the coastal area of the coastal defense force into a sand dune or being swept off a sandbar offshore deposits in the sea.
When the sea breeze is swept the coast will make the collision with the sediment in the coastal area of drift in the combined the area behind the coast is the sand up or be swept out off the coast to the deposition of a sand ridge in the sea.