Thanks for the interesting history and customs, cheng. I can remember as a youngster in the early 1950s, pre-teens, that my grandmother had a large book called something like "The 20th Century in Pictures" (it covered 1900 to about 1935). In it there were pictures from what the book called the Boxer Rebellion, but with no real background explanation. As my only knowledge of the word "boxer" was either someone who fought in a boxing ring or a type of dog, I found it a bit of a puzzle, but I do remember the bullet proof bit, although the book said this was the result of the Boxers being high on heroine.