I agree but only because that's the standard for our culture so somebody not doing it is probably being disrespectful which means it becomes offensive to others because it normally only comes from people with some sort of negative feeling or inconsiderateness for those around them. In some cultures, noisy eating is the proper way and shows you're enjoying the food. Same goes for clothes, toilet sounds, etc. It's a lot more repulsive seeing a human poo on the street than a dog even though it's not fundamentally very different.
> It's so common that the only logical explanation is that it is encouraged. It appears to be the norm and the non-slurper is the exception. I'm glad that your parents taught you to not slurp. You are an exceptional individual.
Anyway I’ve asked enough Chinese people about it to get the same answer. Not all do it, but some do it for these reasons.
They are saying it is normal to slurp noodles, which is what I said in my first reply to you. They did not say that they make 'loud mouth noises' as a sign of respect.
Ask this specific question: "Do you make loud mouth noises while you eat as a sign of respect, or is it just normal to slurp noodles?" and see what answer you get.