So... upon walking around the streets to get to my art class (even though it happens to be vacation and one is simply not supposed to have class), I came across a shop with "Watsons" written as the name/brand. Obviously, I went in for a look. I was a bit early, after all. Not sure if they ment "Watson's" or not though, the shop manager (Blonde, blue eyes! Had the ability to speak in english!) wasn't sure either.
They sold water... Or at least, they sold mainly water. I bought a few on the way back. They all said "Watsons Water" on them, followed by random chinese I can't read.
I'll probably post a few badly taken pictures of the bottles (I don't have a proper camera...) sometime when the computer decides to copperate with my iPod...

Before you ask, the haircut of Dr. Watson and Mr. English-or-American-guy-in-mainland-china don't match. 
Maybe John sold water after the Reichenbatch. 

Oh! I know now! John got so tramatized after the fall he couldn't bear to be a doctor (blood) so he moved to China to sell water!  I dunno..