For Spouse reunion

Hello Sir/Madam,
i am Indian , married with Chinese wife. {almost 3years now}
i have been working in China for 10years. and will apply for Spouse reunion.
i understand that in these 5years stay i need to be in China total 9months.

my question is : after i get the PR card of china .
since in future i need to travel to other countries for business purpose and long stay like 8-9months or longer, may i know if there is any limit or rules that a minimum of time need to stay in CHina? or etc...

could you please advise.

Thank you
Alex