원정 개요

Rao, Lhakpa, Mingma, Pechhumbe and a Chinese woman [Luo Jing] left C4 and 3:40 am on 10 May. The team reached the summit at 7:10 pm, stayed on the summit for about 10 minutes, then returned to C4 at 3 am on 11 May and slept there. Next day 12 May they went down to ABC.

Oxygen:
Up: almost reaching C3 (7200m) began to use oxygen just for climbing;
at C4 began to use oxygen also for sleeping
Down: used oxygen until reached C2