Variations on a theme.
"小心碰头" xiao3xin1 peng4tou2 - "mind your head" is a sign that you can't miss whereever you go in China. That is, if the translation comes out right, which is not really happening in many instances. Please find a selection below. I am really puzzled when it comes to the last one!
Many thanks to Kevin, Chris and Gordon for contributing to this selection!