The Ground Underfoot
Basin, Ridge, Plateau, Karst, Plain
The clearest way to read this route is through a train window. Chengdu sits on the flat floor of the Sichuan basin. Ninety minutes of high-speed rail later you're in Chongqing, a city that climbs steep ridges instead of spreading out. After that the ground keeps changing under you: the collapsed sinkholes of Wulong, Kunming at 1,890 metres on the Yunnan plateau, limestone towers along the Li River, sandstone columns at Zhangjiajie, then the long level run through the North China Plain to Beijing.
The thread through all of it is height. In Chongqing people live in layers: a monorail runs straight through a residential building, and one street can meet another several floors up. On the Li River the vertical is all rock, karst towers rising out of a flat river plain with almost nothing built on them. First-class rail carries most of the route, with domestic flights for the long jumps into Yunnan, from Dali to Guilin, and north to Xi'an.
Your party travels on its own, with a licensed guide in each city who actually lives there. Expect a full pace: early starts for the panda base and the river, and several days that pair a transfer with an afternoon of sightseeing.
"In Chongqing the towers stand on the ridges. On the Li River the ridges are the towers."