A central concept of the film is 'Tian Xia' which literally means heaven/under and is used to signify the empire, and sometimes the world of mankind. They translated it in the subtitles as 'our land'. The film is about the sacrifices people make to be a hero. My heading means 'Under heaven all know beauty is beautiful'.
A very rude man in the audience spent a lot of the film sighing and groaning ostentatiously. I don't know why he didn't just leave. It does prove that it's not everyone's cup of tea.
If you do go and see it, my favourite character was an assassin called Sky who fought with a silver spear. He was utterly gorgeous.