Not only ill-mannered, but they will have to choose HOMOSEXUALITY if there are no women and girls for them to marry.
In most sit-down restaurants and coffee houses in Shanghai there are these neat little wireless units at each table. You can push one button to call a waitress to order, another to call for water, another to call for your check, etc. They all seem to work quite well.
But one constantly hears Chinese men yelling through the restaurant for the waitress, and in very rude and demanding voice. I mean it is sickening. One would think that they are all stinking drunk when they yell out — it is that loud, crude, and belligerent. I always hope the waitress would haul off and slap these men, but of course they will not, but act very humble and as if they are the ones deserving of the insult. It is very demeaning to the help.
And you mention sodomy (you used the PC word, “homosexuality”). We noticed sodomites operating on the tarmac in front of the Harbin City Rail Station at night as far back as 1994! It is a real and growing problem here resulting from the one-child policy which has caused a drastic ratio imbalance between the sexes.
And just another reason why China’s best and brightest females dream of having a Western man.