This is one of the most difficult treks in China. The history of the route is very new, with people starting to walk it after about 2019. The total length of the route is 140 kilometres, but you can get resupply or get out of the mountain at about 85 kilometres, and most people will only walk 85 kilometres because the scenery is better in the first half of the route.
Lack of sufficient information makes this route full of uncertainty.
What we do know is that the route involves climbing at least 2 snowy mountain passes with large glaciers, so some mountaineering tools are needed.
This is beyond the scope of a trekking route, and the extra mountaineering tools add weight, moreover making lightweight gear especially important.
This time my rucksack weighed about 10kg. Carried the latest Lanshan 1 pro SilPoly which weighs only 630g. The new Tianshan rucksack is made by Ultra200X. These two pieces of gear were the test gear for this trip and I evaluated the performance of both pieces of gear and determined how they could be improved.
I also tested the Extra Quilt EX zip from ICEFLAME, filled with 420g of 900FP down and weighing just 600g.