Strange Maps is one of my favorite blogs. It has been turned into a book. Here is a short review by the NYT.
The above map is illustrative of the blog's posts. It compares the populations of China's provinces to the populations of nations. Xinjiang is the same as Madagascar. The city of Tianjin is equal to Cuba. The official population of Guandong is Germany. Plus, the migrant workers in Guandong make up one Uganda. That's a lot of people.