I came online for like 2 minutes to see if I could find a map of Hamburg. This would be what I found instead
http://www.haw-hamburg.de/pers/Kaspar-Sickermann/mgsing/mmgs06a1.jpg (I´m fairly sure I´m not in China. But you never know. I was on a trains for two days.)
Edit: I'm pretty sure I fixed the link.