This is a fork of another module, Lingua::ZH::Numbers. However, the fork is broken. Whatever has been changed has not been documented, the documentation is just the original, even though it doesn't describe the module contents. It says that the "PetaMem" author has taken over maintenance from the original author, but if so why not get co-maintainership rather than fork to a confusingly similar name?
Considering that the original module still works and is documented correctly, and doesn't seem to have any outstanding problems like a huge list of bugs on rt.cpan.org, why is it even necessary to fork? And this doesn't seem to work, it breaks the existing interface in undocumented ways.
I think this is a really poor effort and best avoided. I suspect the same of the other modules by this author which seem to have a similar provenance.