I agree, but it's always a group of girls, so they are protecting each other - here they seem to live in the same big hotel. At least, there is an efficient police in Hong Kong. I am sure they know what they are doing, they are not homeless girls with no money, they have phones, agents.. and the russian power is not something to play with.
What surprised me, anyway, is that those Moscow or Petrograd's girls can go around their town in the middle of the night alone apparently without any danger. They won't do that in Rome, London, Paris or New York.