厕所

Hi ivyzhang, great to notice that your around again :-)

I was wondering what happend to you...

No I didn't take it, someone at work sent me it.

The sign could be telling people to stand there and pee. ;-) And for geeks, they can also calculate how far and long before you know what hits the bottom.

is that pic took by yourself?

If you reach that toilet you probably have wet trousers or someone took a picture of you peeing down the great wall...

我觉得我上那厕所了。