We got an early start the next morning. To get where we were going, we had to walk from the bus through a long row of shops where we got our first taste of the aggressive ToutsOfBeijing™.
One of the most obvious forms of culture shock for a tourist in China (or various other developing countries) is that you cannot ever peacefully and quietly browse in a shop. Shopkeeps aggressively approach you whether you are interested or not. If you try to walk away, they yell at you and follow you, sometimes quite a distance.