Only about 10% of the pilot group is Asian. Most local Chinese are not interested in aviation as a career path. There is no "aviation culture" here, and there is much more money to be made outside flying. Some ex-cadets (CX has a cadet program) have quit CX to get into business.
I am a Captain and have never flown in a "subordinate" position with any of our Asian crew, but I have flown with many Asian S/O's and F/O's. They are trained to the same standards as every one else. You should know that most of our Chinese pilots were raised in Hong Kong during the "colonial" era, and received all English type schooling or were schooled abroad. For most, there is no cultural gap.
I don't make a habit of taking straw polls on the flightdeck but I have never heard anything negative from any of our F/O's etc., on flying with Chinese Captains.
6's assumption on the make-up of the freighter fleet is accurate.
May I suggest that if you have any reservations about flying with Chinese/Asians, then CX is not for you. There is no place for xenophobia or racism here.