pyd file for python package using cython

[Palpandi]

Hi All,

I have a package structure,

A ( uses files from B and C)
B ( init.py, a,py, b.py)
C ( init.py, c.py, d.py)

How to create a pyd file structure for above package structure?
Is it possible to create a single pyd file?
Do I need cython to run pyd file?

Thanks.