And some of them are true

Already, the city [Beijing] has replaced 6,300 road signs that carried bewildering admonitions such as: "To take notice of safe: The slippery are very crafty." (Translation: Be careful, slippery.) Replacing signs will cost the city a substantial amount of money, although it isn't clear how much. Some of the faulty ones, Prof. Chen notes, are decades old and are carved in marble. Wall St. Journal