What should I do if pyd cannot import?

Importing foo.pyd from the interpreter will work. Importing abcde.pyd in the same folder will result in the following error.

>>import abcde
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
 ImportError: DLL load failed—The specified module was not found.

dumpbin/exports because it is in the same folder, so if you do dumpbin/exports, the function PyInit_* also exists as follows.

>dumpbin/exports abcde
 :
           100027CA0PyInit_abcde
 :

In this situation, what other problems do you think are there?Also, how can I confirm it?

I would appreciate it if you could let me know, but both of them are pyd created from C++ to cython, foo.pyd is made from your own simple code, and abcde.pyd is a compilation of other libraries (I'm sorry, but I can't reveal it specifically).