I am just back from a trip to China. It is a busy place, so I was not too surprised that some of the material didn’t quite reflect the current status. One of which is the Great Wall of China at Mu Tian Yu. Has anyone else been there recently? I just realised that the visitor centre is brand new and not on the high-res satellite image material. Also, the roads in Huairou, which is an important town if you want to get to Mu Tian Yu by bus, has changed significantly with a large roundabout entirely replaced by a mere crossing (affects bus lines). Also, it turns out, the Express Bus 936 Kuai is not mapped. As are a large number of local buses, also in Beijing. OSM was of great help for travelling, btw.