I'll be the first to speak out against the political system but why are we blaming player tantrums and the odd uncivilized fan on China lol. Players are tired, tensions are high, fans could be inconsiderate - that could happen anywhere. Unprofessional ball kids? The ATP could reflect that to the tournament officials and get them to change it - but again the poor training might not be down to a "China" problem, just the officials not doing a good enough job.
If you're blaming the schedule and the timing for players being exhausted and angry maybe you have a point.
The true issues I can think of that are more China-related would be the level of fan engagement, the ridiculous exclusivity for their own people and for the rich, and the smog. Last time I went to Shanghai for the tourney the sky was grey AF, never blue. "Foreigners", including me who's from HK (we're a special region but STILL CHINA), had to buy tickets at the diagonal corners because they had a separate domestic system for their own people (I wrote to the tournament the next year and they were basically like "deal with it"). If you can notice from the live broadcast there's a HUGE section for couches and stuff for the officials and big corporations which just reeks of elitism, but of course a lot of these seats and maybe the more premium seats are empty because these people aren't truly into tennis. So you're essentially wasting lots of stadium space for corporate/political interests whereas the real fans get kept out.
The other time I went to Roger's Cup in Canada and man things were so much more normal - just very small sections at the side for corporate sponsors I think, the most ideal seats behind either baseline are open for public and international purchase, and the vibe was overall much more tennis and fan-oriented.