On this day, 34 years ago, on October 21, 1991 (September 14, 1991, the lunar calendar), humans achieved the first time that a hot air balloon floated over Mount Everest. On October 21, 1991, two huge hot air balloons successfully floated over Mount Everest, achieving the first human feat of flying over the world's highest peak by hot air balloons. Two hot air balloons sponsored by British Star Electronics Ltd., one big and one small. The big one is called the "Himalayan Challenge Star" and has a volume of 6792 cubic meters. The small one is used as a photography aid ball and is only 1/4 of the former's volume. This hot air balloon flying over the world's highest peak was hosted by China International Sports Tourism Company and Tibet Autonomous Region Sports Tourism Company. 43-year-old Australia Chris Duhurst served as the main pilot, British Andy Elson and Eric Jones served as the pilots, and famous British photographer Leo Dickinson took the high-altitude adventure photo. At 8:55 and 8:59 a.m. on October 21, two hot air balloons took off from Gojo Base Camp in Nepal. After 17 minutes, they rose to an altitude of 11000 meters at minus 40 degrees Celsius, and then entered the Indian Ocean monsoon current. Flying over Mount Everest from west to east at a speed of 25 meters per second. The reporter saw from the real video that when the hot air balloon flew over Mount Everest, the scene was spectacular. The tall Mount Everest was close at hand, and countless silver-white snow peaks burst out of the vast clouds. After nearly two hours of flight, the hot air balloon landed on the north side of Mount Makaru in Xizang at an altitude of 8400 meters at 10:20.