

how long it usually takes from the employer to get z visa from from chinese foreign expert bureau?
I have recently been offered a job in teaching in china. they asked for all my credentials (degrees + certificates + experiences and reference letter). leter on they asked me to do a medical check from the local approved hosiptal which I did and send to them.
since my employer have applied and its been more than 2 weeks they haven't received A Work Permit for Aliens issued by the Chinese Labor Ministry/ Foreign Expert's License issued by the Chinese Foreign Expert Bureau. when i called them after 10 days regarding the status update they told me that they have applied and they are still waiting reply from chinese bareau.
on the other hand, I have read on web that I usually takes 4-5 working days to get Work Permit for Aliens issued by the Chinese Labor Ministry/ Foreign Expert's License issued by the Chinese Foreign Expert Bureau.
hence my question is that how long it usually takes from the employer to get z visa from from chinese foreign expert bureau ?
also what are the odds of not getting it ?
any one who can help me on this ... plz plz