123 helicopters over five years is about 500 pilots. About 100 leave the PLA every year and there are about 50 pilots a year under training.
The helicopters they are describing are at the Commercial Pilots level and all those exams are in Mandarin. To take them you have to be sponsored by your employer and I cannot see a Chinese helicopter company at that level giving foreign pilots, with all the problems that causes, precedence over their own nationals.
The airlines are different. They have had an incredible expansion in the last decade or so and they needed foreign captains to crew all the aircraft they had ordered.
Not so in the rotary world.
Keep your CVs flowing.