Visa for dependent (not-married)

Hi,

I will shortly be relocating to China with my employer and have a Z type. I will then be applying for a residence permit for 2 years.
I would like my partner to come with me however we are not married. We are both British Citizens
Initially we were looking at tourist L type, however this is proving complicated due to the intended nature of stay.
Is there any other options, i.e is there anyway she could be granted an S1 or S2 type? Or is there any other way around this situation.