A CX manager, last year I think, was required travel to China and be castigated like a naughty schoolboy by an official because a couple of crews had missed ATC calls amid all the 'yowda yowda' of Mandarin on their frequencies. I believe 'points' were lost. After that, Boeing crews, due to their noisy cockpits, had to wear headsets at all times while in Chinese airspace (i.e. 'Bizarro World').