Do I need transit type (G) while travelling from Auckland to Islamabad with two layovers?

Hi,
I am currently residing in New Zealand & hold a Pakistani passport. I will be travelling next month from Auckland to Islamabad via China Southern Airlines. As per itinerary as I have two stop one at Guangzhou Baiyun International Airport (arrival at 0600hrs) with layover time 6h50m & second at Urumqi Diwopu International Airport(Departs at 0855hrs) with layover time of 14h35m. With the mentioned scenario do I need transit visa prior to travel or not.

Thanks,
AM