This photo shows mountaineers from China, Japan and Nepal displaying their national flags after reaching the top of Qomolangma on May 5, 1988. [Photo/Xinhua]

On May 27, 1999, Ji Ji and her husband Renna, both famous Tibetan mountaineers, climbed the mountain together for the sacred flame collection of China's Sixth Traditional Sports Games of National Minorities. They became the first couple in the world to step up to the summit hand in hand. [Photo/Xinhua]