>>6162471There's two things in your sentence that are interesting to comment on.
I feel like westerners in general dislike how Chinese tourists behave in their countries. From what I gather this is a situation that has been improving steadily over the years and that is still improving. Chinese people are getting more and more aware that they should act as guests in other countries and respect that country's culture more.
I do not believe that Chinese people are impolite/rude in China, I even think that they are more polite than westerners but in their own way. Politeness in the west and in the east is very different and it takes some adaptation to understand one country's culture of politeness. To add to this, Japanese do look extremely polite in their mannerisms, but I feel like a lot of people, from the east and the west can dislike that kind of exaggerated politeness. Being too polite can lead people to think you're being a hypocrite which makes you seem less polite instantly.
Again, it's all about culture differences, politeness is not a fixed thing that every "educated" person has, it has many forms and some are hard to understand to people who do not know the culture they're dealing with.