there're around 8 ~10 FO's from hk and macau working for Donghai airlines at shenzhen. 1 FO from Hong Kong working with shenzhen airlines too.
There are many FOs from HK and Macau who are working for Donghai and other Chinese airlines as well, but technically they are still from China. The companies might call them international or foreign pilots but in actuality they really are Chinese. I personally wouldn't include them in the count for foreign FOs as they all have the special talent of speaking Chinese. This is definitely a bonus skill to have when seeking employment with a Chinese airline. DeerJet has a couple of foreign FO kiwis ex-instructors from PanAm flying biz jets. Lots of foreign instructors needed at PanAm and also a flight school in Binzhou near Qingdao I think.
About 70% stake in Hong Kong Airlines (formerly known as CR Airways) is purchased by the state-run parent company of Hainan Airlines. HK airlines has many foreign Captains.
CAFUC - Civil Aviation Flight University of China; largest flight school in the world, located in a small town in the middle of no where in Guanghan, Sichuan near Chengdu.