∴AD=AB，

∵ quadrilateral ABCD is a parallelogram,

∴ The quadrilateral ABCD is a diamond,

∫MG∨AD，NF∨AB，

∴ Quadrilateral Amen is a parallelogram,

∫ Quadrilateral EFCG is a parallelogram.

∴AM∥. Well, Ann ∨. I

∴EN∥.DG，ME∨。 BF，

The quadrilateral EFCG is a parallelogram,

∴EF∥.CG，EG∨。 FC，

∴ND∥.EG∨。 CF，BM∨。 EF∨。 CG，

∴ quadrilateral BMEF and quadrilateral NDGE are parallelograms,

∴BM=EF,ND=EG，

Also, the quadrilateral ABCD is a diamond,

∴AB=AD，

∴AB-BM=AD-ND，

That is AM=AN,

The Amen of the parallelogram is a diamond,

Similarly, the parallelogram EFCG is a diamond,

∴: So there are three squares in the picture.

So the answer is 3.