Re: jingshangling to simatai worries
about 50 people do the Jinshanling - Simatai walk every day. Mostly tourists, mostly not well trained hikers.
I would not hesitate to do the walk with a 7-year-old son. Take plenty to drink and walk early so you have enough time for some rests. I assume the walk will be great fun for him.
There is not a single dangerous step on this walk. A suspension bridge is a suspension bridge. For me it was part of the joy.
From Simatai it is easy to get to Chenge. Taka a taxi from Simatai to Gubeikou, from there busses run frequently to Chengde. You should be at Gubeikou not much after 12:00. Chengde is marvellous.
chinoook's 1st law: Structural weak walls tend to show double structures.
chinoook's 2nd law: Walls are rather built next to older walls than to rebuild them. Newer walls avoid older walls rather than to replace them.
The most dangerous worldview is the worldview of people, who have not viewed the world. (Alexander von Humboldt (1769-1859), German naturalist and explorer)