Enter At Your Own Risk

I saw this stone carving in front of one of the temples with a closed door. I have no idea what the writing means... but I would like to think that behind the closed door are monks having kung fu battles. Perhaps the writing means, "enter at your own risk"?
I really loved the details in this photo... heavy texture on the stone carving, bright red door in the background, a dusty floor in the foreground, two different types of bricks stacked together, a shiny surface reflecting light...

**UPDATE**
Thanks to a Chinese friend, I found out that the word means "a kiosk where someone stands in the snow"... it comes from a story in Ming Dynasty which tells a monk consult Buddhism to Buddha someday was snow.