unable to load an image with C (Cython)

[HLD202]

Hello, I just learn about cython todays and im trying to play with it and now im trying to load and image from local storage with .pyx extension but it just return 4 bytes but when i try to load a .txt it works fine...

Here's the main .py

import pyximport; pyximport.install()
import test_c


def main():
    file: bytes = test_c.req()
    print(file) 

if __name__=='__main__':
    main()

and Here's the test_c.pyx file:

from libc.stdio cimport fopen, fread, fclose, fseek, ftell, SEEK_END, rewind
from libc.stdlib cimport malloc

cpdef req():
    
    cdef long lSize
    cdef char *buffer

    fp = fopen('img.jpg', 'rb')
    fseek(fp, 0, SEEK_END)
    lSize = ftell(fp)
    rewind(fp)
    buffer = <char *>malloc(lSize)

    fread(buffer, 1, lSize, fp)
    fclose(fp)

    return buffer

and here's the result:

Output:
b'\xff\xd8\xff\xe0'