Nairalanders! Can you use cython to create 3d game and iphone app. Is it powerful like pure C

below is a quote from the documentation

write Python code that calls back and forth from and
to C or C++ code natively at any point.

so I'd say sure.
if I were to do this, I would first of all add all of Cython libraries and headers to my compiler's linker path and include path respectively.
I will then write all my graphics code in Cython such that it will have a main function that initializes all the app functionalities.
then I will write a C code in my iPhone app's IDE that will call the main function of my Cython Code.
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the above should be possible if all Cython's functions can be called from C and all of the C graphics library is accessible from Cython.