원정 개요

BC 09/09 4750m
C1 13/09 5700m
C2 17/09 6300m
C3 24/09 6800m
C4 25/09 7400m
Smt 26/09 by Zhang, Luo, Sanje Sherpa at 6:47 am
Smt 27/09 by Zhang (again and w/o oxygen from C4) at 6:10 am, Yang at 6:10 am,
Chen at 5:30 am, Sun at 5:30 am, Ding at 5:20 am, Kaji Sherpa at
5:30 am, Sona Sherpa, Lakpa Sherpa at 5:20 am, Chhiring Sherpa at
5:30 am, Sangde Sherpa at 6:10 am.

26 Sept summit team left C4 at 2:40 am. Weather was good but windy. They spent about 15 minutes on the summit and descended. Zhang descended to C4, where he arrived at 8:40 am; Luo and Sanje descended to BC, where they arrived at 5:40 pm.

27 Sept summit team left C4 at 1 am. Many people on the route. Everyone reached the end of the fixed ropes; however, Zhang stopped about 10m below the summit as there were too many people on the route and he thought it was too dangerous. Team descended to C2, where they arrived between 11 am and 4 pm. Everyone to BC on 28 Sept.

Left BC on 29 Sept by helicopter from BC.

Oxygen:
Taken and used from C3 to top to C3 for all members apart from Zhang
(on 1st summit he started at C4 to top and no O2 for descent); Yang from
C3 to top to C2; Sherpas from C4 to top to C4

For Zhang's 2nd ascent on 27 Sept, he did NOT use oxygen.