Cho Oyu is the sixth-highest mountain in the world at 8,188 metres above sea level. Cho Oyu means "Turquoise Goddess" in Tibetan. The mountain is the westernmost major peak of the Khumbu sub-section of the Mahalangur Himalaya 20 km west of Mount Everest. The mountain stands on the China–Nepal border, between the Tibet Autonomous Region a…Cho Oyu is the sixth-highest mountain in the world at 8,188 metres above sea level. Cho Oyu means "Turquoise Goddess" in Tibetan. The mountain is the westernmost major peak of the Khumbu sub-section of the Mahalangur Himalaya 20 km west of Mount Everest. The mountain stands on the China–Nepal border, between the Tibet Autonomous Region and Koshi Province.