Landing at 4411 meters … an instant aging experience. Well , I got younger again down in Daocheng at 3750 meters. But not fast . There is a better way of doing this : a long flight to Kunming , where the airport is at 2100-ish meter, and then a connecting flight to Daocheng/Yading . Doesn’t run in the winter though.
( There are now four airports at 4000+ meters : La Paz , widely believed to be the worlds highest is the lowest one at 4061 meters. )