The existence of well maintained and clean public restrooms and hooligans is a shibboleth for culture. Some cultures are simply superior.
touristy track is covered by cctvs and they are used to get people for anything including public urination or graffiti so of course it's clean
I wish the touristy places in the UK were as clean though.
Also, writing this comment on a crowded, dirty and smelly train from Gatwick Airport, which has 2 carriages inaccessible because of broken doors and crawling due to signal failure on the line, I already miss the clean and comfortable Chinese trains I was taking from place to place.
That said I do get to work 945 here for more money so I am grateful for this for sure. :)
I think it's kind of the opposite in non authocratic countries...