The Northward Migration of the Majority is an interesting serial of animated rut maps showing the movements of the inhabitants in addition to workers inward 3 Chinese cities. The 3 maps visualize the patterns of population campaign inward Beijing, Shanghai in addition to Guangzhou over a 24 hr period.
The Beijing animation includes an inset map that displays a release of highlights of pregnant moments during the day. The inset shows a zoomed inward map of locations that run across increased numbers of people at specific moments during the day. These include carry hubs during rush hr in addition to work organisation centers during working hours.
Each of the animated rut map layers are overlaid on superlative of a Baidu map of the city. There is no information on where the population information comes from, nonetheless the alone link on the page is to the mobile version of Baidu maps then I suspect the information may come upward from mobile telephone tracking.
