I got Z visa and i am in china now for how many days i can stay ?

Hi, I am AJAY from India. I got Z type with 0 days validity and i moved here in china on 13 October. after coming here i have applied for residence permit and till now i have not got any news from the authority. My company who gave me employment have submitted my documents on my behalf on a website. i am so much worried because i have not got any new.

I really do not have any idea that now for how many days i can stay more? do i need to go back within 30 days too?

please help me out as soon as possible.

Thank you so much
Ajay