We have been lucky with the weather in recent days and it is always a pleasure to make it out of Beijing on the weekend. For that you can hike from the Yunmeng Mountain up over a saddle North and then follow the crystal clear river through the canyon towards the reservoir. You will see some Watch Towers which have been built there "by accident" off the Great Wall in the Ming Dynasty (don't get me going!).
The trail is bushy and in some sections quite steep. There is only one village left, as all the others have been washed away by a flood about a decade ago. It is unlikely you don't see anybody in the remote places. I recommend to upload the exact log on to your GPS (gpx-format, tcx-format).
