Gary's random little things about China:

Vehicular and Pedestrian Yielding Quotient

When crossing a street, or merely making your way down the road, there is a certain law of physics that comes into play: When two forces meet, one must yield.

Here is the general yielding scheme in China:

Cars yield to big buses and trucks.

Bicycles and cars mingle and narrowly avoid each other. When push comes to shove, the bicyclist knows he will lose the fight. But the car driver knows that the bicycle will scratch his car when he runs it over, and will only yield on that premise.

Cars will not yield to, but are required to avoid pedestrians. When you hit a pedestrian at low speed, it does very little damage, and unlike a bicycle, will almost never scratch your car. Therefore pedestrians are given a smaller margin.
Note: Regardless of green or red stop lights, it is against the law to come to a complete stop when making a right hand turn in China (no matter how many pedestrians are in the way). The rule is "honk and avoid, then continue on your way".

Motor scooters yield to no one, not even when they are being driven on a pedestrian-filled sidewalk. Motor scooters zip around like they have nothing to lose - this may be true, as smaller motor scooters require no license of any kind and are very cheap.

If you are driving on the wrong side of the road, or going the wrong way on a one-way street, you do not have to yield to anyone, no matter what kind of vehicle you are operating.

Cars will yield (not by choice) to pedestrians crossing the street in numbers greater than 10 (it is best in China to invite 9 of your friends for an outing if you plan to cross a lot of streets).

In lieu of yielding, drivers are required to honk at pedestrians. I swear to God, this is the law! It's a safety issue: If you are passing a pedestrian that is walking on the side of the road, you are required by law to honk at them to let them know you are there.
Note: All streets in Chinese cities, sound like a New York traffic jam 24 hours per day with all this "safety honking".

I have not been able to find a traffic law that states you must yield to ambulances. And in practice, very few drivers do.

When two large vehicles come face to face on a narrow roadway, and neither can pass, neither will yield. They will sit there, honking at each other for a while. After several cars are lined up behind them, they will decide that they should have yielded earlier, and start to back up. This is to the great dismay of all the cars behind them who will honk in unison. This could go on for an hour or more. It ends when a police officer arrives, tells both drivers what idiots they are, issues tickets to both of them, and then systematically makes the situation worse by insisting that all the smaller cars turn around (rather than back up) by making 162-point turns in the small roadway. Eventually, two of the cars will hit each other, for which both drivers will be cited and fined on the spot.