I m pakistani.Can i enter china on my gratis passport while doing exit from UAE on private passport?

I am pakistani but doing job in UAE. i am having both Gratis and Green passports. Gratis is having visa exemption of China while Green Passport is having resident permit of UAE. I want to go beijing on 18 August 2014. Can i exit UAE on Green passport and enter China on Gratis passport? Actually time is less and i cant get in this time frame.