I have been successed one time, it is so exacting, the bottom of the mountain is summer, but the top of the mountain is winter, when you reached over 6500m, it is already very difficulty to move even one step, go to sky easy but move one step in himalaya difficulty, I can say, when you climbing 7000m higher, you seems walk on the moon & quitely out of earth, it is quite a different world there, you will died any time, but most beautiful view you never seen, too. If you arrived 8848, It means you have meet god, how exacting it is that I can't speak out, just visit my picture here, I would like try it second time, who would like go with me?