On top of the world: Tsang recorded the fastest ascent of Mount Everest by a woman in 25 hours and 50 minutes. — AFP Kathmandu: Former Hong Kong schoolteacher Tsang Yin-hung said she always believed in aiming high after setting a new record for the fastest ascent of Mount Everest by a woman. Tsang scaled the 8,848.86m-high mountain in 25 hours and 50 minutes, a Nepal government officer who recorded her time said on Thursday. The 44-year-old reached the summit of the world’s highest peak on May 23 and arrived back in Kathmandu on Sunday. “I am... relaxed and happy because I set this target four years ago.