Hong Kong roads are different from the rest of roads in China. Hong Kong, the former British colony has kept the British tradition to drive on the right side of the road. However, when you want to connect such place with the rest of the “normal” world which is driving on the left side of the road, you have to have a crossing point specially designed for that.
Here you can see a number of projects which were submitted by architects to a competition for the construction of the Hong Kong Boundary Crossing Facilities.
One of those is The Flipper Bridge and it is used to safely connect the roads where people drive on the left side and the roads where people drive on the right side.