Labuche Kang Reconnaissance, 1986. From September 1 to October 5, 1986, a joint Chinese-Japanese expedition made a reconnaissance of Labuche Kang (7367 meters, 24,170 feet). The peak lies between Cho Oyu and Shisha Pangma. The Chinese were Cheng Tian Lian, leader, and Lee Wang, and the Japanese were Yasuhei Saito and Masashi Kumada. They made Base Camp at Longoro village at 4500 meters on September 9, 1986 and Advance Base at Tsolongma at 5300 meters on September 17. On September 18, they climbed P 6140 (20,145 feet) and spotted a possible but not too easy route. From a new Advance Base they ascended a lateral moraine and located a suitable Camp I site at 5650 meters. From there, they climbed to a 6200-meter col and found a reasonable route on the west ridge. The north face and north ridge were deemed unsuitable.
Sadao Tambe, A.A.C. and Himalayan Association of Japan