After pickup from your hotel, travel in climate-controlled comfort to Xishanzi village in Huairou country. Hike cross-country for an hour or so to reach the Jiankou Great Wall, and climb the tower for sweeping views of the steep sections to the west and east.
Hike to the Niujijiaobian, an extremely steep and dangerous section, where your guide will show you an alternative route. Break for snacks and catch your breath before you hike along the wall to the start of the renovated Great Wall at Mutianyu. You will walk several hours from here before enjoying lunch in a local Chinese restaurant and returning to your hotel.