my Z visa will expire on September 8.

Hello I have a huge problem, I will be having my wedding here in Chengdu, my fiancé is from Chengdu, but bad news is that my visa will expire on September 8, can I apply for a L type to stay till my wedding is finished.Im on a Z type and my company still haven't finished all my paper work for my new Z type? Can I apply for a L type here in Chengdu?